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acid Idioms & Phrases


2-hydroxybenzoic acid

  • noun a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes
    2-hydroxybenzoic acid.
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2-methylpropenoic acid

  • noun an unsaturated acid (C4H6O2) used to make resins and plastics
    2-methylpropenoic acid.
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acetic acid

  • noun a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
    acetic acid.
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acetoacetic acid

  • noun unstable acid found in abnormal amounts in the blood and urine in some cases of impaired metabolism (as diabetes mellitus or starvation)
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Acetous acid

  • a name formerly given to vinegar which contains acetic acid .
Webster 1913

acetylsalicylic acid

  • noun the acetylated derivative of salicylic acid; used as an analgesic anti-inflammatory drug (trade names Bayer, Empirin, and St. Joseph) usually taken in tablet form; used as an antipyretic; slows clotting of the blood by poisoning platelets
    Empirin; St. Joseph; Bayer; aspirin.
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acid anhydrides

  • noun organic compounds that react with water to form an acid
    acyl anhydrides.
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acid dye

  • noun dye in which the chromophore is part of a negative ion
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acid halide

  • noun organic compounds containing the group -COX where X is a halogen atom
    acyl halide.
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acid head

  • noun someone who takes LSD
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acid hydrogen

  • noun a hydrogen atom in an acid that forms a positive ion when the acid dissociates
    acidic hydrogen.
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acid precipitation

  • noun rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water
    acid precipitation.
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acid rain

  • noun rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water
    acid precipitation.
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acid rock

  • noun a musical style that emerged in the 1960s; rock music inspired by or related to drug-induced experience
    psychedelic rock.
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acid test

  • noun a rigorous or crucial appraisal
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acid value

  • noun (chemistry) the amount of free acid present in fat as measured by the milligrams of potassium hydroxide needed to neutralize it
    • as the glycerides in fat slowly decompose the acid value increases
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acid-base balance

  • noun (physiology) the normal equilibrium between acids and alkalis in the body
    acid-base balance.
    • with a normal acid-base balance in the body the blood is slightly alkaline
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acid-base equilibrium

  • noun (physiology) the normal equilibrium between acids and alkalis in the body
    acid-base balance.
    • with a normal acid-base balance in the body the blood is slightly alkaline
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acid-base indicator

  • noun an indicator that changes color on going from acidic to basic solutions
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acid-fast

  • adjective satellite not easily decolorized by acid solutions; pertains to micro-organisms (especially the tubercle bacillus that causes tuberculosis)
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acid-forming

  • adjective satellite yielding an acid in aqueous solution
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acid-loving

  • adjective thriving in a relatively acidic environment (especially of plants requiring a pH well below 7)
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acid-tasting

  • adjective satellite having a sour acidic taste
    sour-tasting.
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acid-wash

  • verb wash with acid so as to achieve a bleached look
    • acid-wash blue jeans
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acrylic acid

  • noun an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins
    acrylic acid.
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Active valeric acid

  • a metameric variety which turns the plane of polarization to the right, although formed by the oxidation of a levorotatory amyl alcohol.
Webster 1913

adenylic acid

  • noun a nucleotide found in muscle cells and important in metabolism; reversibly convertible to ADP and ATP
    AMP; adenosine monophosphate.
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adipic acid

  • noun a carboxylic acid used in the manufacture of nylon
    adipic acid.
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alginic acid

  • noun a gum used especially as a thickener or emulsifier
    algin.
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Allantoic acid

  • . (Chem.) See Allantoin.
Webster 1913

alpha-linolenic acid

  • noun a polyunsaturated fatty acid with 18 carbon atoms; the only omega-3 fatty acid found in vegetable products; it is most abundant in canola oil; a fatty acid essential for nutrition
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Amic acid

  • (Chem.), one of a class of nitrogenized acids somewhat resembling amides.
Webster 1913

Amido acid

  • an acid in which a portion of the nonacid hydrogen has been replaced by the amido group. The amido acids are both basic and acid.
Webster 1913

Amido formic acid

  • carbamic acid.
Webster 1913

amino acid

  • noun organic compounds containing an amino group and a carboxylic acid group
    amino acid.
    • proteins are composed of various proportions of about 20 common amino acids
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aminoalkanoic acid

  • noun organic compounds containing an amino group and a carboxylic acid group
    amino acid.
    • proteins are composed of various proportions of about 20 common amino acids
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aminobenzoic acid

  • noun a derivative of benzoic acid
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Amniotic acid

  • . (Chem.) R. See Allantoin.
Webster 1913

Angelic acid

  • an acid obtained from angelica and some other plants.
Webster 1913

arsenic acid

  • noun an acid formed from arsenic pentoxide
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ascorbic acid

  • noun a vitamin found in fresh fruits (especially citrus fruits) and vegetables; prevents scurvy
    vitamin C; C.
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aspartic acid

  • noun a crystalline amino acid found in proteins and occurring naturally in sugar beets and sugar cane
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Aërial acid

  • carbonic acid. Obs. Ure.
Webster 1913

barbituric acid

  • noun a white crystalline acid derived from pyrimidine; used in preparing barbiturate drugs
    malonylurea.
WordNet
Bar`bi*tu"ric ac"id
Definitions
  1. (Chem.) A white, crystalline substance, , derived from alloxantin, also from malonic acid and urea, and regarded as a substituted urea.
Webster 1913

battery acid

  • noun dilute sulfuric acid used in storage batteries
    battery acid.
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battery-acid

  • noun street name for lysergic acid diethylamide
    Elvis; Zen; dose; back breaker; window pane; pane; Lucy in the sky with diamonds; acid; loony toons; dot; superman.
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Benzoic acid

  • noun a white crystalline solid occurring in many resins
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  • or flowers of benzoin, a peculiar vegetable acid, C6H5.CO2H, obtained from benzoin, and some other balsams, by sublimation or decoction. It is also found in the urine of infants and herbivorous animals. It crystallizes in the form of white, satiny flakes; its odor is aromatic; its taste is pungent, and somewhat acidulous.
Webster 1913

beta-hydroxybutyric acid

  • noun beta derivative of hydroxybutyric acid that is found in the blood and urine in some cases of impaired metabolism
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bile acid

  • noun any of the steroid acids generated in the liver and stored with bile
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Boletic acid

  • an acid obtained from the Boletus fomentarius, variety pseudo-igniarius. Same as Fumaric acid.
Webster 1913

boracic acid

  • noun any of various acids containing boron and oxygen
    boracic acid.
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Boric acid

  • noun a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative
    boric acid.
  • noun any of various acids containing boron and oxygen
    boracic acid.
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  • a white crystalline substance B(OH)3, easily obtained from its salts, and occurring in solution in the hot lagoons of Tuscany.
Webster 1913

bromic acid

  • noun an unstable acid used as an oxidizing agent
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butanoic acid

  • noun an unpleasant smelling fatty acid found especially in butter
    butanoic acid.
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Butyric acid

  • noun an unpleasant smelling fatty acid found especially in butter
    butanoic acid.
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  • C3H7.CO2H, an acid found in butter; an oily, limpid fluid, having the smell of rancid butter, and an acrid taste, with a sweetish aftertaste, like that of ether. There are two metameric butyric acids, called in distinction the normal- and iso-butyric acid. The normal butyric acid is the one common in rancid butter.
Webster 1913

Cacodylic acid

  • a white, crystalline, deliquescent substance, (CH3)2AsO.OH, obtained by the oxidation of cacodyl, and having the properties of an exceedingly stable acid; also called alkargen.
Webster 1913

Caffeic acid

  • an acid obtained from coffee tannin, as a yellow crystalline substance, C9H8O4.
Webster 1913

Caffetannic acid

  • a variety of tannin obtained from coffee berries, regarded as a glucoside.
Webster 1913

Camphoric acid

  • a white crystallizable substance, C10H16O4, obtained from the oxidation of camphor.
Webster 1913

capric acid

  • noun a fatty acid found in animal oils and fats; has an unpleasant smell resembling goats
    capric acid.
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Capric acid, C9H9.CO2H, Caprylic acid, C7H15.CO2H, ∧ Caproic acid, C5H11.CO2H

  • are fatty acids occurring in small quantities in butter, cocoanut oil, etc., united with glycerin; they are colorless oils, or white crystalline solids, of an unpleasant odor like that of goats or sweat.
Webster 1913

caproic acid

  • noun a fatty acid found in animal oils and fats or made synthetically; smells like goats
    caproic acid.
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caprylic acid

  • noun a fatty acid having a rancid taste; found in butter and other fats and oils
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Carbamic acid

  • noun an acid that is known only by virtue of its salts (as ammonium carbamate) or its esters (as urethane)
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  • (Chem.), an amido acid, NH2.CO2H, not existing in the free state, but occurring as a salt of ammonium in commercial ammonium carbonate; called also amido formic acid.
Webster 1913

Carbazotic acid

  • (Chem.), picric acid. See under Picric.
Webster 1913

carbolic acid

  • noun a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
    oxybenzene; hydroxybenzene; phenol; carbolic acid.
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Carbonic acid

  • noun a weak acid known only in solution; formed when carbon dioxide combines with water
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  • (Chem.), an acid H2CO3, not existing separately, which, combined with positive or basic atoms or radicals, forms carbonates. On common language the term is very generally applied to a compound of carbon and oxygen, CO2, more correctly called carbon dioxide. It is a colorless, heavy, irrespirable gas, extinguishing flame, and when breathed destroys life. It can be reduced to a liquid and solid form by intense pressure. It is produced in the fermentation of liquors, and by the combustion and decomposition of organic substances, or other substances containing carbon. It is formed in the explosion of fire damp in mines, and is hance called after damp; it is also know as choke damp, and mephilic air. Water will absorb its own volume of it, and more than this under pressure, and in this state becomes the common soda water of the shops, and the carbonated water of natural springs. Combined with lime it constitutes limestone, or common marble and chalk. Plants imbibe it for their nutrition and growth, the carbon being retained and the oxygen given out.
Webster 1913

carbonic acid gas

  • noun a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
    CO2; carbon dioxide.
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carboxylic acid

  • noun an organic acid characterized by one or more carboxyl groups
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Carminic acid

  • . Same as Carmine, 3.
Webster 1913

Cerebric acid

  • (Physiol. Chem.), a name formerly sometimes given to cerebrin.
Webster 1913

cerotic acid

  • noun a white solid fatty acid found in waxes (such as beeswax)
    cerotic acid.
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Cetraric acid

  • . See Cetrarin.
Webster 1913

Cheidonic acid

  • a weak acid extracted fron the celandine (Chelidonium majus), as a white crystalline substance.
Webster 1913

chloric acid

  • noun (HClO3) a strong unstable acid with an acrid odor found in chlorate salts
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chlorohydric acid

  • noun an aqueous solution of hydrogen chloride; a strongly corrosive acid
    chlorohydric acid.
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chlorous acid

  • noun (HClO2) a strongly oxidizing acid; known only in solution
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Cholic acid

  • noun an insoluble crystalline acid present in bile
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  • (Chem.), a complex organic acid found as a natural constituent of taurocholic and glycocholic acids in the bile, and extracted as a resinous substance, convertible under the influence of ether into white crystals.
Webster 1913

Chromic acid

  • noun an unstable acid known only in solution and as chromate salts
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  • an acid, H2CrO4, analogous to sulphuric acid, not readily obtained in the free state, but forming well known salts, many of which are colored pigments, as chrome yellow, chrome red, etc.
Webster 1913

Chromous acid

  • a bluish gray powder, CrO.OH, of weak acid properties and regard as an acid.
Webster 1913

Chrysophanic acid

  • (Chem.), a yellow crystalline substance extracted from rhubarb, yellow dock, sienna, chrysarobin, etc., and shown to be a derivative of an anthracene. It is used in the treatment of skin diseases; called also rhein, rheic acid, rhubarbarin, etc.
Webster 1913

Cinnamic acid

  • (Chem.), a white, crystalline, odorless substance. C6H5.C2H2C2H2.CO2H, formerly obtained from storax and oil of cinnamon, now made from certain benzene derivatives in large quantities, and used for the artificial production of indigo.
Webster 1913

Citraconic acid

  • (Chem.), a white, crystalline, deliquescent substance, C3H4(CO2H)2, obtained by distillation of citric acid. It is a compound of the ethylene series.
Webster 1913

Citric acid

  • noun a weak water-soluble acid found in many fruits (especially citrus fruits); used as a flavoring agent
WordNet
  • (Chem.), an organic acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberies, etc., as a white crystalline substance, having a pleasant sour taste.
Webster 1913

citric acid cycle

  • noun in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy
    citric acid cycle; Krebs cycle; Krebs citric acid cycle.
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Columbic acid

  • (Chem.), a weak acid derived from columbic or niobic oxide, Nb2O5; called also niobic acid.
  • (Chem.), an organic acid extracted from the columbo root as a bitter, yellow, amorphous substance.
Webster 1913

Coumaric acid

  • (Chem.), one of a series of aromatic acids, related to cinnamic acid, the most important of which is a white crystalline substance, HO.C6H4.C2H2.CO2H, obtained from the tonka bean, sweet clover, etc., and also produced artifically.
Webster 1913

creatine phosphoric acid

  • noun an organic compound of creatine and phosphoric acid; found in the muscles of vertebrates where its hydrolysis releases energy for muscular contraction
    creatine phosphate; phosphocreatine.
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Cresylic acid

  • . (Chem.) See Cresol.
Webster 1913

Cretaceous acid

  • an old name for carbonic acid.
Webster 1913

Croconic acid

  • (Chem.), a yellow crystalline substance, C5O3(OH)2, obtained from potassium carboxide, rhodizonic acid, and various phenol and quinone derivatives of benzene, and forming yellow or orange colored salts.
Webster 1913

Crotonic acid

  • (Chem.), a white crystalline organic acid, C3H5.CO2H, of the ethylene, or acrylic acid series. It was so named because formerly supposed to exist in croton oil. Also, any acid metameric with crotonic acid proper.
Webster 1913

Cuminic acid

  • (Chem.), white crystalline substance, C3H7.C6H4.CO2H, obtained from oil of caraway.
Webster 1913

Cyanic acid

  • noun a colorless poisonous volatile liquid acid that hydrolyzes readily to ammonia and carbon dioxide
WordNet
  • (Chem.), an acid, HOCN, derived from cyanogen, well known in its salts, but never isolated in the free state.
Webster 1913

cyanuric acid

  • noun a trimer of cyanic acid
WordNet
Cyanuric acid
Definitions
  1. (Chem.), an organic acid, C3O3N3H3, first obtained by heating uric acid or urea, and called pyrouric acid; afterwards obtained from isocyanic acid. It is a white crystalline substance, odorless and almost tasteless; -- called also tricarbimide.
Webster 1913

decanedioic acid

  • noun a dicarboxylic acid used to make resins
    decanedioic acid.
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decanoic acid

  • noun a fatty acid found in animal oils and fats; has an unpleasant smell resembling goats
    capric acid.
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Delphinic acid

  • . (Chem.) See Valeric acid, under Valeric. Obs.
Webster 1913

deoxyribonucleic acid

  • noun (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
    deoxyribonucleic acid; DNA.
    • DNA is the king of molecules
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desoxyribonucleic acid

  • noun (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
    deoxyribonucleic acid; DNA.
    • DNA is the king of molecules
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Dextronic acid

  • a sirupy substance obtained by the partial oxidation of various carbohydrates, as dextrose, etc.
Webster 1913

dibasic acid

  • noun an acid containing two replaceable hydrogen atoms per molecule
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dichromic acid

  • noun the hypothetical acid (H2Cr2O7) from which dichromates are derived; known only in solution and in the form of dichromate salts
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diethylbarbituric acid

  • noun a barbiturate used as a hypnotic
    veronal; diethylmalonylurea; barbitone; barbital.
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Disulphuric acid

  • a thick oily liquid, H2S2O7, called also Nordhausen acid (from Nordhausen in the Harts, where it was originally manufactured), fuming sulphuric acid, and especially pyrosulphuric acid. See under Pyrosulphuric.
Webster 1913

Dithionic acid

  • (Chem.), an unstable substance, H2S2O6, known only in its solutions, and in certain well-defined salts.
Webster 1913

docosahexaenoic acid

  • noun an omega-3 fatty acid with 22 carbon atoms; found in fish (especially tuna and bluefish)
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dodecanoic acid

  • noun a crystalline fatty acid occurring as glycerides in natural fats and oils (especially coconut oil and palm-kernel oil)
    dodecanoic acid.
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domoic acid

  • noun a neurotoxin that is deadly for humans; found in various marine algae
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eicosapentaenoic acid

  • noun an omega-3 fatty acid with 20 carbon atoms; found in fish (especially tuna and bluefish)
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elaeostearic acid

  • noun a crystalline unsaturated fatty acid
    elaeostearic acid.
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Elaidic acid

  • noun a monounsaturated fatty acid that has the same structure as oleic acid except that it is a trans fatty acid; the major trans fatty acid in margarine and fried foods
WordNet
  • (Chem.), a fatty acid isomeric with oleic acid, and obtained from it by the action of nitrous acid.
Webster 1913

electrolyte acid

  • noun dilute sulfuric acid used in storage batteries
    battery acid.
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eleostearic acid

  • noun a crystalline unsaturated fatty acid
    elaeostearic acid.
WordNet

Ellagic acid

  • (Chem.), a white crystalline substance, C14H8O9, found in bezoar stones, and obtained by the oxidation of gallic acid.
Webster 1913

essential amino acid

  • noun an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet
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ethacrynic acid

  • noun diuretic (trade name Edecrin) used to treat edema
    Edecrin.
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ethanedioic acid

  • noun a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis
    ethanedioic acid.
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ethanoic acid

  • noun a colorless pungent liquid widely used in manufacturing plastics and pharmaceuticals
    acetic acid.
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Ethionic acid

  • (Chem.), a liquid derivative of ethylsulphuric and sulphuric (thionic) acids, obtained by the action of sulphur trioxide on absolute alcohol.
Webster 1913

ethylenediaminetetraacetic acid

  • noun a complex molecule used medically to chelate metal ions in cases of lead or heavy metal poisoning
    EDTA.
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Ethylsulphuric acid

  • (Chem.), an acid sulphate of ethyl, H.C2H5.SO4, produced as a thick liquid by the action of sulphiric acid on alcohol. It appears to be the active catalytic agent in the process of etherification.
Webster 1913

Euchroic acid

  • (Chem.), an organic, imide acid, obtained as a colorless crystalline substance, C12H4N2O8 by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance (euchrone), hence its name.
Webster 1913

Euthiochroic acid

  • (Chem.), a complex derivative of hydroquinone and sulphonic (thionic) acid. so called because it contains sulphur, and forms brilliantly colored (yellow) salts.
Webster 1913

Euxanthic acid

  • (Chem.), a yellow, crystalline, organic acid, extracted from euxanthin.
Webster 1913

Fat acid

  • . (Chem.) See Sebacic acid, under Sebacic.
Webster 1913

Fatty acid

  • noun any of a class of aliphatic monocarboxylic acids that form part of a lipid molecule and can be derived from fat by hydrolysis; fatty acids are simple molecules built around a series of carbon atoms linked together in a chain of 12 to 22 carbon atoms
WordNet
  • (Chem.), any one of the paraffin series of monocarbonic acids, as formic acid, acetic, etc.; so called because the higher members, as stearic and palmitic acids, occur in the natural fats, and are themselves fatlike substances.
Webster 1913

Ferric acid

  • (Chem.), an acid, H2FeO4, which is not known in the free state, but forms definite salts, analogous to the chromates and sulphates.
Webster 1913

Ferricyanic acid

  • noun a brown unstable acid formed from ferricyanide
WordNet
  • (Chem.), a brown crystalline substance, H6(CN)12Fe2, obtained from potassium ferricyanide, and regarded as the type of the ferricyanides; called also hydro-ferricyanic acid, hydrogen ferricyanide, etc.
Webster 1913

ferrocyanic acid

  • noun a white unstable acid formed from ferrocyanide salts
WordNet
  • (Chem.), a white crystalline substance, H4(CN)6Fe, of strong acid properties, obtained from potassium ferrocyanide, and regarded as the type of the ferrocyanides; called also hydro-ferrocyanic acid, hydrogen ferrocyanide. etc.
Webster 1913

Fluoridic acid

  • (Chem.), a double fluoride, consisting essentially of a solution of boron fluoride, in hydrofluoric acid. It has strong acid properties, and is the type of the borofluorides. Called also borofluoric acid.
Webster 1913

fluoroboric acid

  • noun an acid of fluorine and boron
WordNet

Fluosilicic acid

  • noun an unstable poisonous corrosive acid known primarily in the form of its salts
    fluosilicic acid.
WordNet
  • a double fluoride of hydrogen and silicon, H2F6Si, obtained in solution in water as a sour fuming liquid, and regarded as the type of the fluosilicates; called also silicofluoric acid, and hydrofluosilicic acid.
Webster 1913

folic acid

  • noun a B vitamin that is essential for cell growth and reproduction
    vitamin M; vitamin Bc; folate; folic acid; folacin; pteroylglutamic acid.
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Formic acid

  • noun a colorless pungent fuming vesicatory liquid acid HCOOH found naturally in ants and many plants or made catalytically from carbon monoxide and steam; used in finishing textiles and paper and in the manufacture of insecticides and fumigants
WordNet
  • a colorless, mobile liquid, HCO.OH, of a sharp, acid taste, occurring naturally in ants, nettles, pine needles, etc., and produced artifically in many ways, as by the oxidation of methyl alcohol, by the reduction of carbonic acid or the destructive distillation of oxalic acid. It is the first member of the fatty acids in the paraffin series, and is homologous with acetic acid.
Webster 1913

Frangulinic acid

  • (Chem.), a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin.
Webster 1913

Fulminic acid

  • noun (CNOH) an unstable acid occurring mainly in the form of explosive salts and esters that is isomeric with cyanic acid
WordNet
  • (Chem.), a complex acid, H2C2N2O2, isomeric with cyanic and cyanuric acids, and not known in the free state, but forming a large class of highly explosive salts, the fulminates. Of these, mercuric fulminate, the most common, is used, mixed with niter, to fill percussion caps, charge cartridges, etc. Fulminic acid is made by the action of nitric acid on alcohol.
Webster 1913

Fulminuric acid

  • (Chem.), a white, crystalline, explosive subatance, H3C3N3O3, forming well known salts, and obtained from the fulnunates. It is isomeric with cyanuric acid, and hence is also called isocyanuric acid.
Webster 1913

fulvic acid

  • noun a yellow to yellow-brown humic substance that is soluble in water under all pH conditions
    • they measured the fluvial fulvic acid
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Fumaric acid

  • noun a colorless crystalline acid with a fruity taste; used in making polyester resins
WordNet
  • (Chem.), a widely occurring organic acid, exttracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid.
Webster 1913

Fuming sulphuric acid

  • . (Chem.) Same as Disulphuric acid, uder Disulphuric.
Webster 1913

Fuming sulphuric acid, ∨ Nordhausen sulphuric acid

  • . See Disulphuric acid, under Disulphuric.
Webster 1913

Gallic acid

  • noun a colorless crystalline acid obtained from tannin
WordNet
  • (Chem.), an organic acid, very widely distributed in the vegetable kingdom, being found in the free state in galls, tea, etc., and produced artificially. It is a white, crystalline substance, C6H2(HO)3.CO2H, with an astringent taste, and is a strong reducing agent, as employed in photography. It is usually prepared from tannin, and both give a dark color with iron salts, forming tannate and gallate of iron, which are the essential ingredients of common black ink.
Webster 1913

Gallotannic acid

  • . See Tannic acid, under Tannic.
Webster 1913

gamma acid

  • noun a crystalline acid used to make azo dyes
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gamma aminobutyric acid

  • noun an amino acid that is found in the central nervous system; acts as an inhibitory neurotransmitter
    GABA.
WordNet

gastric acid

  • noun digestive secretions of the stomach glands consisting chiefly of hydrochloric acid and mucin and the enzymes pepsin and rennin and lipase
    gastric juice.
WordNet

Geic acid

  • . (Chem.) See Humin.
Webster 1913

gibberellic acid

  • noun a crystalline acid associated with gibberellin
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Glacial acid

  • (Chem.), an acid of such strength or purity as to crystallize at an ordinary temperature, in an icelike form; as acetic or carbolic acid.
Webster 1913

Glacial phosphoric acid

  • . (Chem.) (a) Metaphosphoric acid in the form of glassy semitransparent masses or sticks . (b) Pure normal phosphoric acid.
Webster 1913

Gluconic acid

  • (Chem.), an organic acid, obtained as a colorless, sirupy liquid, by the oxidation of glucose; called also maltonic acid, and dextronic acid.
Webster 1913

Glutamic acid

  • noun an amino acid occurring in proteins; important in the nitrogen metabolism of plants; used in monosodium glutamate to enhance the flavor of meats
    glutamic acid.
WordNet
  • a nitrogenous organic acid obtained from certain albuminoids, as gluten; called also amido-glutaric acid.
Webster 1913

glutaminic acid

  • noun an amino acid occurring in proteins; important in the nitrogen metabolism of plants; used in monosodium glutamate to enhance the flavor of meats
    glutamic acid.
WordNet

Glutaric acid

  • an organic acid obtained as a white crystalline substance, isomeric with pyrotartaric acid; called also normal pyrotartaric acid.
Webster 1913

Glyceric acid

  • noun a syrupy acid obtained by oxidation of glycerol or glyceraldehyde
WordNet
  • (Chem.), an organic acid, obtained by the partial oxidation of glycerin, as a thick liquid. It is a hydroxyl derivative of propionic acid, and has both acid and alcoholic properties.
Webster 1913

Glycocholic acid

  • (Physiol. Chem.), a conjugate acid, composed of glycocoll and cholic acid, present in bile in the form of a sodium salt. The acid commonly forms a resinous mass, but can be crystallized in long, white needles.
Webster 1913

Glycolic acid

  • noun a translucent crystalline compound found in sugar cane and sugar beets and unripe grapes
    glycolic acid; glycollic acid.
WordNet
  • (Chem.), an organic acid, found naturally in unripe grapes and in the leaves of the wild grape (Ampelopsis quinquefolia), and produced artificially in many ways, as by the oxidation of glycol, whence its name. It is a sirupy, or white crystalline, substance, HO.CH2.CO2H, has the properties both of an alcohol and an acid, and is a type of the hydroxy acids; called also hydroxyacetic acid.
Webster 1913

glycollic acid

  • noun a translucent crystalline compound found in sugar cane and sugar beets and unripe grapes
    glycolic acid; glycollic acid.
WordNet

Graphitic acid

  • (Chem.), an organic acid, so called because obtained by the oxidation of graphite; usually called mellitic acid.
Webster 1913

heptadecanoic acid

  • noun a colorless crystalline synthetic fatty acid
    heptadecanoic acid.
WordNet

hexacosanoic acid

  • noun a white solid fatty acid found in waxes (such as beeswax)
    cerotic acid.
WordNet

hexadecanoic acid

  • noun a saturated fatty acid that is the major fat in meat and dairy products
    hexadecanoic acid.
WordNet

hexanedioic acid

  • noun a carboxylic acid used in the manufacture of nylon
    adipic acid.
WordNet

hexanoic acid

  • noun a fatty acid found in animal oils and fats or made synthetically; smells like goats
    caproic acid.
WordNet

Hippuric acid

  • a white crystalline substance, containing nitrogen, present in the urine of herbivorous animals, and in small quantity in human urine. By the action of acids, it is decomposed into benzoic acid and glycocoll.
Webster 1913

homogentisic acid

  • noun an acid formed as an intermediate product of the metabolism of tyrosine and phenylalanine
    alkapton; alcapton.
WordNet

humic acid

  • noun a dark brown humic substance that is soluble in water only at pH values greater than 2
    • the half-life of humic acid is measured in centuries
WordNet

hyaluronic acid

  • noun a viscous mucopolysaccharide found in the connective tissue space and the synovial fluid of movable joints and the humors of the eye; a cementing and protective substance
WordNet

hydrazoic acid

  • noun a colorless explosive liquid that is volatile and poisonous and foul-smelling
    hydrogen azide; HN; azoimide.
WordNet

Hydriodic acid

  • noun (HI) a colorless or yellow aqueous solution of hydrogen iodide
    • hydriodic acid is a strong acid
WordNet
  • (Chem.), a pungent, colorless gas, HI, usually prepared as a solution in water. It is strong reducing agent. Called also hydrogen iodine.
Webster 1913

Hydrobromic acid

  • noun an aqueous solution of hydrogen bromide that is a strong liquid acid
WordNet
  • (Chem.), a colorless, pungent, corrosive gas, HBr, usually collected as a solution in water. It resembles hydrochloric acid, but is weaker and less stable. Called also hydrogen bromide.
Webster 1913

Hydrochloric acid

  • noun an aqueous solution of hydrogen chloride; a strongly corrosive acid
    chlorohydric acid.
WordNet
  • (Chem.), hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great affinity for water, and the commercial article is a strong solution of the gas in water. It is a typical acid, and is an indispensable agent in commercial and general chemical work. Called also muriatic, ∧ chlorhydric, acid.
Webster 1913

Hydrocyanic acid

  • noun a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds
    hydrocyanic acid.
WordNet
  • (Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocyanide), and chemically resembles hydrochloric and hydrobromic acids. Called also prussic acid, hydrogen cyanide, etc.
Webster 1913

Hydrofluoric acid

  • noun a weak poisonous liquid acid; formed by solution of hydrogen fluoride in water
WordNet
  • (Chem.), a colorless, mobile, volatile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odor. It is produced by the action of sulphuric acid on fluorite, and is usually collected as a solution in water. It attacks all silicates, as glass or porcelain, is the agent employed in etching glass, and is preserved only in vessels of platinum, lead, caoutchouc, or gutta-percha.
Webster 1913

hydrofluosilicic acid

  • noun an unstable poisonous corrosive acid known primarily in the form of its salts
    fluosilicic acid.
WordNet

hydroiodic acid

  • noun an acid formed by aqueous solution of hydrogen iodide
WordNet

Hydroxy acid

  • noun any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself
WordNet
  • (Chem.), an organic acid, having (besides the hydroxyl group of the carboxyl radical) an alcoholic hydroxyl group, and thus having the qualities of an alcohol in addition to its acid properties; as, lactic and tartaric acids are hydroxy acids.
Webster 1913

hydroxyacetic acid

  • noun a translucent crystalline compound found in sugar cane and sugar beets and unripe grapes
    glycolic acid; glycollic acid.
WordNet

hydroxybenzoic acid

  • noun a crystalline derivative of benzoic acid
WordNet

hydroxybutyric acid

  • noun hydroxy derivative of butyric acid
    hydroxybutyric acid.
WordNet

Hypochlorous acid

  • noun a weak unstable acid known only in solution and in its salts; used as a bleaching agent and as an oxidizing agent
WordNet
  • (Chem.), an acid derived from chlorine, not known in a pure state, but forming various salts, called hypochlorites.
Webster 1913

Hypogæic acid

  • (Chem.), an acid in the oil of the earthnut, in which it exists as a glyceride, and from which it is extracted as a white, crystalline substance.
Webster 1913

Hyponitrous acid

  • noun an explosive white crystalline weak acid (H2N2O2)
WordNet
  • (Chem.), an unstable nitrogen acid, NOH, whose salts are produced by reduction of the nitrates, although the acid itself is not isolated in the free state except as a solution in water; called also nitrosylic acid.
Webster 1913

Hypophosphoric acid

  • noun a crystalline tetrabasic acid (H4P2O6)
WordNet
  • (Chem.), an acid, P2H4O6, produced by the slow oxidation of moist phosphorus, and isolated only as a solution in water. It is regarded as a condensation product of one molecule of phosphoric acid with one of phosphorous acid, by partial dehydration.
Webster 1913

Hypophosphorous acid

  • noun a clear or yellow monobasic acid (H3PO2)
    hypophosphorous acid; orthophosphorous acid.
WordNet
  • (Chem.) , an acid, H3PO2, whose salts are produced by the action of barium hygrate on phosphorus. It may be obtained from its water solution, by exaporation and freezing, as a white crystalline substance. It is a powerful reducing agent.
Webster 1913

Hyposulphuric acid

  • an acid, H2S2O6, obtained by the action of manganese dioxide on sulphur dioxide, and known only in a watery solution and in its salts; called also dithionic acid. See Dithionic.
Webster 1913

Hyposulphurous acid

  • . (a) Thiosulphuric acid. Obs. (b) An acid, H2SO2, obtained by the reduction of sulphurous acid. It is not obtained in the free state, but in an orange-yellow water solution, which is a strong reducing and bleaching agent. Called also hydrosulphurous acid.
Webster 1913

Hæmatic acid

  • (Physiol.), a hypothetical acid, supposed to be formed from hemoglobin during its oxidation in the lungs, and to have the power of freeing carbonic acid from the sodium carbonate of the serum.
Webster 1913

Imido acid

  • an organic acid, consisting of one or more acid radicals so united with the imido group that it contains replaceable acid hydrogen, and plays the part of an acid; as, uric acid, succinimide, etc., are imido acids.
Webster 1913

indoleacetic acid

  • noun a plant hormone promoting elongation of stems and roots
    IAA.
WordNet

indolebutyric acid

  • noun a synthetic plant hormone promoting elongation of stems and roots
WordNet

Iodic acid

  • noun a soluble crystalline acid; used as a reagent and disinfectant
WordNet
  • a monobasic acid, consisting of iodine with three parts of oxygen and one of hydrogen.
Webster 1913

iodoamino acid

  • noun an amino acid with iodine added
WordNet

Iodous acid

  • a hypothetical acid, analogous to chlorous acid.
Webster 1913

isobutylphenyl propionic acid

  • noun a nonsteroidal anti-inflammatory and analgesic medicine (trade names Advil and Motrin and Nuprin) used to relieve the pain of arthritis and as an antipyretic
    Advil; Nuprin; Motrin; ibuprofen.
    • daily use of ibuprofen can irritate the stomach
WordNet

Isocyanic acid

  • noun an acid known only in the form of its esters
WordNet
  • an acid metameric with cyanic acid, and resembling it in its salts. It is obtained as a colorless, mobile, unstable liquid by the heating cyanuric acid. Called technically carbimide.
Webster 1913

itaconic acid

  • noun a crystalline carboxylic acid; occurs in some fermentations of sugars
WordNet

juniperic acid

  • noun a crystalline acid found in the exudations of some conifers
WordNet

krebs citric acid cycle

  • noun in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy
    citric acid cycle; Krebs cycle; Krebs citric acid cycle.
WordNet

Lactic acid

  • noun a clear odorless hygroscopic syrupy carboxylic acid found in sour milk and in many fruits
WordNet
  • (Physiol. Chem.), a sirupy, colorless fluid, soluble in water, with an intensely sour taste and strong acid reaction. There are at least three isomeric modifications all having the formula C3H6O3. Sarcolactic or paralactic acid occurs chiefly in dead muscle tissue, while ordinary lactic acid results from fermentation. The two acids are alike in having the same constitution (expressed by the name ethylidene lactic acid), but the latter is optically inactive, while sarcolactic acid rotates the plane of polarization to the right. The third acid, ethylene lactic acid, accompanies sarcolactic acid in the juice of flesh, and is optically inactive.
Webster 1913

Lauric acid

  • noun a crystalline fatty acid occurring as glycerides in natural fats and oils (especially coconut oil and palm-kernel oil)
    dodecanoic acid.
WordNet
  • (Chem.), a white, crystalline substance, C12H24O2 or CH3(CH2)10COOH , resembling palmitic acid, and obtained from the fruit of the bay tree, and other sources. Also known as dodecanoic acid, laurostearic acid, dodecoic acid. It is obtained from various vegetable sources. Sodium salt of Lauric acid is used as a detergent.
Webster 1913

lead-acid accumulator

  • noun a battery with lead electrodes with dilute sulphuric acid as the electrolyte; each cell generates about 2 volts
    lead-acid accumulator.
WordNet

lead-acid battery

  • noun a battery with lead electrodes with dilute sulphuric acid as the electrolyte; each cell generates about 2 volts
    lead-acid accumulator.
WordNet

Lichenic acid

  • . (a) An organic acid, C14H24O3 obtained from Iceland moss . (b) An old name of fumaric acid.
Webster 1913

linoleic acid

  • noun a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
    linoleic acid.
WordNet

linolenic acid

  • noun a liquid polyunsaturated fatty acid that occurs in some plant oils; an essential fatty acid
WordNet

linolic acid

  • noun a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
    linoleic acid.
WordNet

LIthic acid

  • (Old Med. Chem.), uric acid. See Uric acid, under Uric.
Webster 1913

lysergic acid

  • noun a crystalline acid often used in medical research; obtained from ergotic alkaloids
WordNet

lysergic acid diethylamide

  • noun a powerful hallucinogenic drug manufactured from lysergic acid
    LSD.
WordNet

maleic acid

  • noun a colorless crystalline compound found in unripe fruit (such as apples or tomatoes or cherries) and used mainly to make polyester resins
WordNet

Malic acid

  • a hydroxy acid obtained as a substance which is sirupy or crystallized with difficulty, and has a strong but pleasant sour taste. It occurs in many fruits, as in green apples, currants, etc. It is levorotatory or dextrorotatory according to the temperature and concentration. An artificial variety is a derivative of succinic acid, but has no action on polarized light, and thus malic acid is a remarkable case of physical isomerism.
Webster 1913

Manganic acid

  • noun a dibasic acid (H2MnO4) found only in solution and in manganate salts
WordNet
  • an acid, H2MnO4, formed from manganese, analogous to sulphuric acid.
Webster 1913

Manganous acid

  • a hypothetical compound analogous to sulphurous acid, and forming the so-called manganites.
Webster 1913

Mannitic acid

  • (Chem.), a white amorphous substance, intermediate between saccharic acid and mannite, and obtained by the partial oxidation of the latter.
Webster 1913

Margaric acid

  • noun a colorless crystalline synthetic fatty acid
    heptadecanoic acid.
WordNet
  • . (a) (Physiol. Chem.) A fatty body, crystallizing in pearly scales, and obtained by digesting saponified fats (soaps) with an acid. It was formerly supposed to be an individual fatty acid, but is now known to be simply an intimate mixture of stearic and palmitic acids. (b) (Chem.) A white, crystalline substance, C17H34O2 of the fatty acid series, intermediate between palmitic and stearic acids, and obtained from the wax of certain lichens, from cetyl cyanide, and other sources.
Webster 1913

Marine acid

  • (Chem.), hydrochloric acid. Obs.
Webster 1913

mefenamic acid

  • noun a nonsteroidal anti-inflammatory and analgesic drug (trade name Ponstel) used to treat mild pain (especially menstrual cramps)
    Ponstel.
WordNet

Mellitic acid

  • (Chem.), a white, crystalline, organic substance, C6(CO2H)6, occurring naturally in combination with aluminium in the mineral mellite, and produced artificially by the oxidation of coal, graphite, etc., and hence called also graphitic acid.
Webster 1913

metaphosphoric acid

  • noun a glassy solid acid ([HPO3]n) often used as a dehydrating agent
WordNet

Metasilicic acid

  • (Chem.), a gelatinous substance, or white amorphous powder, analogous to carbonic acid, and forming many stable salts.
Webster 1913

methacrylic acid

  • noun an unsaturated acid (C4H6O2) used to make resins and plastics
    2-methylpropenoic acid.
WordNet

Mineral acids

  • (Chem.), inorganic acids, as sulphuric, nitric, phosphoric, hydrochloric, acids, etc., as distinguished from the organic acids.
Webster 1913

monobasic acid

  • noun an acid containing only one replaceable hydrogen atom per molecule
WordNet

monounsaturated fatty acid

  • noun an unsaturated fatty acid whose carbon chain has one double or triple valence bond per molecule; found chiefly in olive oil and chicken and almonds
WordNet

monte-acid

Monte`-ac"id noun
Etymology
F. monter to raise + acide acid.
Definitions
  1. (Chem.) An acid elevator, as a tube through which acid is forced to some height in a sulphuric acid manufactory.
Webster 1913

mucic acid

  • noun a solid acid (C6H10O8) found in milk or sugar
WordNet

Muriatic acid

  • noun a former name for hydrochloric acid
WordNet
  • hydrochloric acid, HCl; formerly called also marine acid, and spirit of salt. See hydrochloric, and the Note under Muriate.
Webster 1913

myristic acid

  • noun a saturated fatty acid occurring naturally in animal and vegetable fats
    myristic acid.
WordNet

nalidixic acid

  • noun antibacterial agent used especially to treat genitourinary infections
    NegGram.
WordNet

nicotinic acid

  • noun a B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
    niacin.
WordNet

Nitric acid

  • noun acid used especially in the production of fertilizers and explosives and rocket fuels
    aqua fortis.
WordNet
  • a colorless or yellowish liquid obtained by distilling a nitrate with sulphuric acid. It is powerfully corrosive, being a strong acid, and in decomposition a strong oxidizer.
Webster 1913

Nitrohydrochloric acid

  • noun a yellow fuming corrosive mixture of nitric and hydrochloric acid that dissolves metals (including gold)
    aqua regia.
WordNet
  • a mixture of nitric and hydrochloric acids, usually in the proportion of one part of the former to three of the latter, and remarkable for its solvent action on gold and platinum; called also nitromuriatic acid, and aqua regia.
Webster 1913

Nitrous acid

  • noun an unstable inorganic acid known only in solution and as nitrite salts
WordNet
  • (Chem.), a hypothetical acid of nitrogen HNO2, not known in the free state, but forming a well known series of salts, viz., the nitrites.
Webster 1913

nucleic acid

  • noun (biochemistry) any of various macromolecules composed of nucleotide chains that are vital constituents of all living cells
WordNet

octadecanoic acid

  • noun a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats
    octadecanoic acid.
WordNet

octanedioic acid

  • noun a dicarboxylic acid found in cork
    octanedioic acid.
WordNet

OEnanthic acid

  • an acid obtained from &oe;nanthic ether by the action of alkalies.
Webster 1913

oleic acid

  • noun a colorless oily liquid occurring as a glyceride; it is the major fatty acid in olive oil and canola oil; used in making soap and cosmetics and ointments and lubricating oils
WordNet

omega-3 fatty acid

  • noun a polyunsaturated fatty acid whose carbon chain has its first double valence bond three carbons from the beginning
    omega-3.
WordNet

omega-6 fatty acid

  • noun a polyunsaturated fatty acid whose carbon chain has its first double valence bond six carbons from the beginning
    omega-6.
WordNet

orthoboric acid

  • noun a white or colorless slightly acid solid that is soluble in water and ethanol; used in the manufacture of glass and paper and adhesives and in detergents and as a flux in welding; also used as an antiseptic and food preservative
    boric acid.
WordNet

orthophosphoric acid

  • noun an acid used in fertilizers and soaps: H3PO4
    orthophosphoric acid.
WordNet

orthophosphorous acid

  • noun a clear or yellow monobasic acid (H3PO2)
    hypophosphorous acid; orthophosphorous acid.
WordNet

Osmic acid

  • . (Chem.) (a) Osmic tetroxide . Obs. (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites.
Webster 1913

Osmious acid

  • (Chem.), an acid derived from osmium, analogous to sulphurous acid, and forming unstable salts. It is a brown amorphous substance.
Webster 1913

oxalacetic acid

  • noun an acid formed by oxidation of maleic acid (as in metabolism of fats and carbohydrates)
    oxalacetic acid.
WordNet

Oxalic acid

  • noun a toxic colorless crystalline organic acid found in oxalis and other plants; used as a bleach and rust remover and in chemical analysis
    ethanedioic acid.
WordNet
  • (Chem.), a dibasic acid, existing combined in oxalis as an acid potassium oxalate, and in many plant tissues as the calcium oxalate. It is prepared on a large scale, by the action of fused caustic soda or potash on sawdust, as a white crystalline substance, which has a strong acid taste, and is poisonous in large doses. It is used in dyeing, calico printing, bleaching flax and straw, the preparation of formic acid, and in salts of lemon for removing ink stains, mold, etc.
Webster 1913

oxaloacetic acid

  • noun an acid formed by oxidation of maleic acid (as in metabolism of fats and carbohydrates)
    oxalacetic acid.
WordNet

Oxy acid

  • . See Oxyacid (below).
Webster 1913

oxybutyric acid

  • noun hydroxy derivative of butyric acid
    hydroxybutyric acid.
WordNet

oxygen acid

  • noun any acid that contains oxygen
    oxyacid.
WordNet

Oxymuriatic acid

  • chlorine, formerly so called on the supposition that it was a compound of oxygen and muriatic acid. Obs.
Webster 1913

palmitic acid

  • noun a saturated fatty acid that is the major fat in meat and dairy products
    hexadecanoic acid.
WordNet

pantothenic acid

  • noun a vitamin of the vitamin B complex that performs an important role in the oxidation of fats and carbohydrates and certain amino acids; occurs in many foods
    pantothen.
WordNet

para aminobenzoic acid

  • noun a metabolic acid found in yeast and liver cells; used to make dyes and drugs and sun blockers
    PABA.
WordNet

pectic acid

  • noun a complex acid that occurs in ripe fruit and some vegetables
WordNet

pentanoic acid

  • noun a clear liquid carboxylic acid used in perfumes and drugs
    pentanoic acid.
WordNet

perboric acid

  • noun a form of boric acid
WordNet

perchloric acid

  • noun a powerful oxidizing agent; forms perchlorates
WordNet

periodic acid

  • noun any acid of iodine that contains oxygen
WordNet

permanganic acid

  • noun an unstable purple acid (HMnO4) known only in solution or of permanganate salts
WordNet

Phenic acid

  • (Chem.), a phenol. Obsoles.
Webster 1913

Phenol acid

  • (Chem.), any one of a series of compounds which are at once derivatives of both phenol and some member of the fatty acid series; thus, salicylic acid is a phenol acid. s.a. is not a fatty acid, but a benzoic acid derivative. IT should say "carboxylic acid"
Webster 1913

phenylic acid

  • noun a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
    oxybenzene; hydroxybenzene; phenol; carbolic acid.
WordNet

Phosphoric acid

  • noun an acid used in fertilizers and soaps: H3PO4
    orthophosphoric acid.
WordNet
  • (Chem.), a white crystalline substance, H3PO4, which is the most highly oxidized acid of phosphorus, and forms an important and extensive series of compounds, viz., the phosphates.
Webster 1913

phosphorous acid

  • noun a clear or yellow monobasic acid (H3PO2)
    hypophosphorous acid; orthophosphorous acid.
WordNet

Phthalic acid

  • noun a colorless acid used to make dyes and perfumes
WordNet
  • (Chem.), a white crystalline substance, C6H4.(CO2H)2, analogous to benzoic acid, and employed in the brilliant dyestuffs called the phthaleins.
Webster 1913

picric acid

  • noun a yellow toxic highly explosive strong acid; used in high explosives and as a dye and in chemical reactions
WordNet

Polychromatic acid

  • (Old Chem.), a substance obtained by the action of nitric acid on aloes.
Webster 1913

polyphosphoric acid

  • noun a series of oxyacids of phosphorus
WordNet

Polysilicic acid

  • (Chem.), any one of a series of acids formed by the condensation of two or more molecules of silicic acid, with elimination of water.
Webster 1913

Polytungstic acid

  • (Chem.), any one of several complex acids of tungsten containing more than one atom of tungsten.
Webster 1913

polyunsaturated fatty acid

  • noun an unsaturated fatty acid whose carbon chain has more than one double or triple valence bond per molecule; found chiefly in fish and corn and soybean oil and safflower oil
WordNet

potassium acid carbonate

  • noun a crystalline salt (KHCO3) that is used in baking powder and as an antacid
    potassium hydrogen carbonate; potassium bicarbonate.
WordNet

propanoic acid

  • noun a liquid fatty acid found in milk and sweat and in fuel distillates
    propanoic acid.
WordNet

propenoic acid

  • noun an unsaturated liquid carboxylic acid used in the manufacture of acrylic resins
    acrylic acid.
WordNet

propionic acid

  • noun a liquid fatty acid found in milk and sweat and in fuel distillates
    propanoic acid.
WordNet

prussic acid

  • noun a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds
    hydrocyanic acid.
WordNet

pteroylglutamic acid

  • noun a B vitamin that is essential for cell growth and reproduction
    vitamin M; vitamin Bc; folate; folic acid; folacin; pteroylglutamic acid.
WordNet

pteroylmonoglutamic acid

  • noun a B vitamin that is essential for cell growth and reproduction
    vitamin M; vitamin Bc; folate; folic acid; folacin; pteroylglutamic acid.
WordNet

pyrogallic acid

  • noun a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer
    pyrogallol.
WordNet

pyroligneous acid

  • noun a red-brown liquid formed in distillation of wood which contains acetic acid, methanol, acetone, wood oils, and tars
    wood vinegar.
WordNet

pyrophosphoric acid

  • noun a solid acid formed by reactions of orthophosphoric acid
WordNet

pyruvic acid

  • noun a colorless acid formed as an important intermediate in metabolism or fermentation
WordNet

racemic acid

  • noun the optically inactive form of tartaric acid that is often found in grape juice
WordNet

recombinant deoxyribonucleic acid

  • noun genetically engineered DNA made by recombining fragments of DNA from different organisms
    recombinant DNA.
WordNet

Reverted phosphoric acid

  • (Agric. Chem.), phosphoric acid changed from acid (soluble) salts back to neutral or basic (insoluble) salts.
Webster 1913

ribonucleic acid

  • noun (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell
    RNA.
    • ribonucleic acid is the genetic material of some viruses
WordNet

ricinoleic acid

  • noun an oily fatty acid found in castor oil and used in soap
WordNet

saccharic acid

  • noun a white dicarboxylic acid formed from oxidation of sugar or starch
WordNet

salicylic acid

  • noun a white crystalline substance with a bitter aftertaste; used as a fungicide or in making aspirin or dyes or perfumes
    2-hydroxybenzoic acid.
WordNet

salso-acid

Sal"so-ac`id adjective
Etymology
L. salsus salted, salt + acidus acid.
Definitions
  1. Having a taste compounded of saltness and acidity; both salt and acid. R.
Webster 1913

Salt acid

  • (Chem.), hydrochloric acid.
Webster 1913

Saltpeter acid

  • (Chem.), nitric acid; sometimes so called because made from saltpeter.
Webster 1913

saturated fatty acid

  • noun a fatty acid whose carbon chain cannot absorb any more hydrogen atoms; found chiefly in animal fats
WordNet

sebacic acid

  • noun a dicarboxylic acid used to make resins
    decanedioic acid.
WordNet

selenic acid

  • noun a strong acid (H2SeO4) analogous to sulfuric acid
WordNet

Silicic acid

  • noun a jellylike substance (hydrated silica)
WordNet
  • (Chem.), an amorphous gelatinous substance, Si(HO)4, very unstable and easily dried to silica, but forming many stable salts; called also orthosilicic, ∨ normal silicic, acid.
Webster 1913

Silicofluoric acid

  • (Chem.), a compound of hydrofluoric acid and silicon fluoride, known only in watery solution. It is produced by the action of silicon fluoride on water, and is regarded as an acid, H2SiF6, and the type and origin of the silicofluorides.
Webster 1913

Soluble phosphoric acid, Insoluble phosphoric acid

  • (Agric. Chem.), phosphoric acid combined in acid salts, or in neutral or basic salts, which are respectively soluble and insoluble in water or in plant juices.
Webster 1913

sorbic acid

  • noun a white crystalline carboxylic acid used as a preservative
WordNet

Stannic acid

  • . (a) A hypothetical substance, Sn(OH)4, analogous to silic acid, and called also normal stannic acid. (b) Metastannic acid.
Webster 1913

Stearic acid

  • noun a waxy saturated fatty acid; occurs widely as a glyceride in animal and vegetable fats
    octadecanoic acid.
WordNet
  • (Chem.), a monobasic fatty acid, obtained in the form of white crystalline scales, soluble in alcohol and ether. It melts to an oily liquid at 69°C.
Webster 1913

suberic acid

  • noun a dicarboxylic acid found in cork
    octanedioic acid.
WordNet

succinic acid

  • noun a dicarboxylic acid (C4H6O4) active in metabolic processes
WordNet

sulfanilic acid

  • noun a crystalline acid made from aniline and used as a dye
    sulfanilic acid.
WordNet

sulfonic acid

  • noun an acid derived from sulphuric acid
    sulfonic acid.
WordNet

sulfuric acid

  • noun (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry
    oil of vitriol; sulfuric acid; vitriol.
WordNet

sulphanilic acid

  • noun a crystalline acid made from aniline and used as a dye
    sulfanilic acid.
WordNet

sulphonic acid

  • noun an acid derived from sulphuric acid
    sulfonic acid.
WordNet

Sulphur acid

  • . (Chem.) See Sulphacid.
Webster 1913

Sulphuric acid

  • noun (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry
    oil of vitriol; sulfuric acid; vitriol.
WordNet
  • . (a) Sulphur trioxide (see under Sulphur); formerly so called on the dualistic theory of salts. Obs. (b) A heavy, corrosive, oily liquid, H2SO4, colorless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fumes. It attacks and dissolves many metals and other intractable substances, sets free most acids from their salts, and is used in the manufacture of hydrochloric and nitric acids, of soda, of bleaching powders, etc. It is also powerful dehydrating agent, having a strong affinity for water, and eating and corroding paper, wood, clothing, etc. It is thus used in the manufacture of ether, of imitation parchment, and of nitroglycerin. It is also used in etching iron, in removing iron scale from forgings, in petroleum refining, etc., and in general its manufacture is the most important and fundamental of all the chemical industries. Formerly called vitriolic acid, and now popularly vitriol, and oil of vitriol.
Webster 1913

Sulphurous acid

  • . (a) Sulphur dioxide. See under Sulphur. Obs. (b) An acid, H2SO3, not known in the free state except as a solution of sulphur dioxide in water, but forming a well-known series of salts (the sulphites).
Webster 1913

super acid

  • noun street names for ketamine
    jet; honey oil; K; green; super C; cat valium; special K.
WordNet

Tannic acid

  • noun any of various complex phenolic substances of plant origin; used in tanning and in medicine
    tannin.
WordNet
  • . (Chem.) (a) An acid obtained from nutgalls as a yellow amorphous substance, C14H10O9, having an astringent taste, and forming with ferric salts a bluish-black compound, which is the basis of common ink. Called also tannin, and gallotannic acid. (b) By extension, any one of a series of astringent substances resembling tannin proper, widely diffused through the vegetable kingdom, as in oak bark, willow, catechu, tea, coffee, etc.
Webster 1913

Tartaric acid

  • noun an acid found in many fruits; used in soft drinks and confectionery and baking powder
WordNet
  • . (a) An acid widely diffused throughout the vegetable kingdom, as in grapes, mountain-ash berries, etc., and obtained from tartar as a white crystalline substance, C2H2(OH)2.(CO2H)2, having a strong pure acid taste. It is used in medicine, in dyeing, calico printing, photography, etc., and also as a substitute for lemon juice. Called also dextro-tartaric acid. (b) By extension, any one of the series of isomeric acids (racemic acid, levotartaric acid, inactive tartaric acid) of which tartaric acid proper is the type.
Webster 1913

tetrabasic acid

  • noun an acid containing four replaceable hydrogen atoms per molecule
WordNet

tetradecanoic acid

  • noun a saturated fatty acid occurring naturally in animal and vegetable fats
    myristic acid.
WordNet

thiocyanic acid

  • noun an unstable acid that can be obtained by distilling a thiocyanate salt
WordNet

thymic acid

  • noun a colorless crystalline solid used in perfume or preserving biological specimens or in embalming or medically as a fungicide or antiseptic
    thymol; thyme camphor.
WordNet

Titanic acid

  • noun a white weak acid that is a hydrated form of titanium dioxide
WordNet
  • (Chem.), a white amorphous powder, Ti.(OH)4, obtained by decomposing certain titanates; called also normal titanic acid. By extension, any one of a series of derived acids, called also metatitanic acid, polytitanic acid, etc.
Webster 1913

toluic acid

  • noun an isomeric acid derived from toluene
WordNet

trans fatty acid

  • noun a fatty acid that has been produced by hydrogenating an unsaturated fatty acid (and so changing its shape); found in processed foods such as margarine and fried foods and puddings and commercially baked goods and partially hydrogenated vegetable oils
WordNet

tribasic acid

  • noun an acid containing three replaceable hydrogen atoms per molecule
WordNet

tricarboxylic acid cycle

  • noun in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy
    citric acid cycle; Krebs cycle; Krebs citric acid cycle.
WordNet

trichloracetic acid

  • noun a strong acid made by chlorinating acetic acid
    trichloracetic acid.
WordNet

trichloroacetic acid

  • noun a strong acid made by chlorinating acetic acid
    trichloracetic acid.
WordNet

triphosphoric acid

  • noun an acid that is a partial anhydride of three molecules of phosphoric acid; known chiefly in the form of its salts and esters
WordNet

Tungstic acid

  • noun an oxyacid of tungsten (often polymeric in nature) formed by neutralizing alkaline tungstate solutions
WordNet
  • an acid of tungsten, H2WO4, analogous to sulphuric and chromic acids.
Webster 1913

Umbellic acid

  • . (Chem.) (a) Anisic acid. Obs. (b) A yellow powder obtained from umbelliferone.
Webster 1913

undecylenic acid

  • noun an acid that is a component of perspiration
WordNet

unsaturated fatty acid

  • noun a fatty acid whose carbon chain can absorb additional hydrogen atoms
WordNet

Uric acid

  • noun a white tasteless odorless crystalline product of protein metabolism; found in the blood and urine
WordNet
  • a crystalline body, present in small quantity in the urine of man and most mammals. Combined in the form of urate of ammonia, it is the chief constituent of the urine of birds and reptiles, forming the white part. Traces of it are also found in the various organs of the body. It is likewise a common constituent, either as the free acid or as a urate, of urinary or renal calculi and of the so-called gouty concretions. From acid urines, uric acid is frequently deposited, on standing in a cool place, in the form of a reddish yellow sediment, nearly always crystalline. Chemically, it is composed of carbon, hydrogen, nitrogen, and oxygen, C5H4N4O3, and by decomposition yields urea, among other products. It can be made synthetically by heating together urea and glycocoll. It was formerly called also lithic acid, in allusion to its occurrence in stone, or calculus.
Webster 1913

valeric acid

  • noun a clear liquid carboxylic acid used in perfumes and drugs
    pentanoic acid.
WordNet

valproic acid

  • noun anticonvulsant (trade name Depokene) used to prevent some kinds of seizures
    Depokene.
WordNet

Vanadic acid

  • noun any of various oxyacids of vanadium; known mostly in the form of its salts
    vanadium pentoxide.
WordNet
  • (Chem.), an acid analogous to phosphoric acid, not known in the free state but forming a well-known series of salts.
Webster 1913

Veratric acid

  • (Chem.), an acid occurring, together with veratrine, in the root of white hellebore (Veratrum album), and in sabadilla seed; extracted as a white crystalline substance which is related to protocatechuic acid.
Webster 1913

Vitriolic acid

  • (Old Chem.), (a) sulphuric acid. See Vitriol (b). Colloq.
Webster 1913

Wine acid

  • . (Chem.) See Tartaric acid, under Tartaric. Colloq.
Webster 1913

Wood acid, Wood vinegar

  • (Chem.), a complex acid liquid obtained in the dry distillation of wood, and containing large quantities of acetic acid; hence, specifically, acetic acid. Formerly called pyroligneous acid.
Webster 1913

xanthic acid

  • noun any of a class of unstable organic acids containing sulphur
WordNet

Zirconic acid

  • an acid of zirconium analogous to carbonic and silicic acids, known only in its salts.
Webster 1913