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active Idioms & Phrases


active agent

  • noun chemical agent capable of activity
    active.
WordNet

active air defense

  • noun air defense by the use aircraft or missiles or artillery or electronic countermeasures
WordNet

active application

  • noun an application that is currently running and in the foreground
WordNet

active birth

  • noun childbirth during which the mother is encouraged to be an active participant
WordNet

Active capital, Active wealth

  • money, or property that may readily be converted into money.
Webster 1913

active citizen

  • noun a citizen who takes an active role in the community (as in crime prevention and neighborhood watch)
WordNet

active immunity

  • noun a form of acquired immunity in which the body produces its own antibodies against disease-causing antigens
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active matrix screen

  • noun a type of LCD screen used for some portable computers; there is a separate circuit for each pixel
WordNet

active placebo

  • noun a placebo used in experimental tests of a drug that has noticeable side effects
    • an active placebo mimics the side effects of the experimental drug
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active site

  • noun the part of an enzyme or antibody where the chemical reaction occurs
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active transport

  • noun transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy
WordNet

active trust

  • noun a trust in which the trustee must perform certain duties
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active voice

  • noun the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb
    active.
    • `The boy threw the ball' uses the active voice
WordNet

be active

  • verb be in a state of action
    move.
    • she is always moving
WordNet

highly active antiretroviral therapy

  • noun a combination of protease inhibitors taken with reverse transcriptase inhibitors; used in treating AIDS and HIV
    HAART; drug cocktail.
WordNet

Optically active, Optically inactive

  • (Chem. Physics), terms used of certain metameric substances which, while identical with each other in other respects, differ in this, viz., that they do or do not produce right-handed or left-handed circular polarization of light.
Webster 1913

self-active

Self`-ac"tive adjective
Definitions
  1. Acting of one's self or of itself; acting without depending on other agents.
Webster 1913

surface-active

  • adjective satellite capable of lowering the surface tension of a liquid; used especially of detergents
WordNet

surface-active agent

  • noun a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved
    surfactant; wetter; wetting agent.
WordNet