ray : Idioms & Phrases

• noun electromagnetic radiation that can produce photochemical reactions
  actinic radiation.
  

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• noun the radiation of alpha particles during radioactive decay
  alpha radiation.
  

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• noun radiation of beta particles during radioactive decay
  beta radiation; electron radiation.
  

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• a yellow-spotted, long-tailed eagle ray (Stoasodon nàrinari) of the Southern United States and the West Indies.

Webster 1913

• . (Geom.) See Pencil of rays, below.

Webster 1913

• noun a stingray with a short tail and a broad fin
  

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• a short-tailed American sting ray (Pteroplatea Maclura), having very broad pectoral fins.

Webster 1913

• the invisible, heating rays which emanate from the sum, and burning and heated bodies.

Webster 1913

• noun a beam of electrons emitted by the cathode of an electrical discharge tube
  

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• (Phys.), a kind of ray generated at the cathode in a vacuum tube, by the electrical discharge X-ray .

Webster 1913

• noun electronic equipment that provides visual images of varying electrical quantities
  scope; CRO; oscilloscope.
  

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• noun a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
  CRT.
  

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• (Opt.), the pencil of rays of light which proceed from a radiant point to a given surface, as that of a lens, or conversely.

Webster 1913

• (Opt.), rays of light, which, proceeding from different points of an object, tend toward a single point.

Webster 1913

• noun highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds
  

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• noun large ray found along eastern coast of North America
  Rhinoptera bonasus; cow-nosed ray.
  

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• noun large ray found along eastern coast of North America
  Rhinoptera bonasus; cow-nosed ray.
  

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• (Zoöl.), a British ray (Raia miraletus).

Webster 1913

• noun an electron ejected from matter by ionizing radiation
  

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• noun small manta (to 4 feet) that travels in schools
  Mobula hypostoma.
  

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• . See Sea Devil.

Webster 1913

• noun powerful free-swimming tropical ray noted for `soaring' by flapping winglike fins; usually harmless but has venomous tissue near base of the tail as in stingrays
  

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• any large ray of the family Myliobatidæ, or Ætobatidæ. The common European species (Myliobatis aquila) is called also whip ray, and miller.
• (Zoöl.), any large species of ray of the genus Myliobatis (esp. M. aquila).

Webster 1913

• noun any sluggish bottom-dwelling ray of the order Torpediniformes having a rounded body and electric organs on each side of the head capable of emitting strong electric discharges
  crampfish; torpedo; numbfish.
  

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• (Zoöl.), the torpedo.

Webster 1913

• a torpedo.

Webster 1913

• (Opt.), that one or two parts of a ray divided by double refraction which does not follow the ordinary law of refraction.

Webster 1913

• (Anat.), one of the hornlike, cartilaginous, or bony, dermal rods which form the skeleton of the fins of fishes.

Webster 1913

• noun electromagnetic radiation emitted during radioactive decay and having an extremely short wavelength
  gamma radiation.
  

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Half"-ray` noun

Definitions

1. (Geom.) A straight line considered as drawn from a center to an indefinite distance in one direction, the complete ray being the whole line drawn to an indefinite distance in both directions.

Webster 1913

• noun a ray that produces a thermal effect
  heat ray.
  

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• noun a ray that produces a thermal effect
  heat ray.
  

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• a term formerly applied to the rays near the red end of the spectrum, whether within or beyond the visible spectrum.

Webster 1913

• (Zoöl.), the sea devil.

Webster 1913

• noun a ray of infrared radiation; produces a thermal effect (as from an infrared lamp)
  

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• noun extremely large pelagic tropical ray that feeds on plankton and small fishes; usually harmless but its size make it dangerous if harpooned
  manta; devilfish.
  

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• noun a sheet of vascular tissue separating the vascular bundles
  medullary ray.
  

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• noun a sheet of vascular tissue separating the vascular bundles
  medullary ray.
  

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• (Bot.), the rays of cellular tissue seen in a transverse section of exogenous wood, which pass from the pith to the bark.

Webster 1913

• noun a ray of moonlight
  moonbeam; moon ray.
  

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• noun a ray of moonlight
  moonbeam; moon ray.
  

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• (Opt.), those rays which are not luminous or visible, and which in the spectrum are beyond the limits of the visible portion.

Webster 1913

• (Opt.) that one of the two parts of a ray divided by double refraction which follows the usual or ordinary law of refraction.

Webster 1913

• (Zoöl.), a very large ray (Dicerobatis Giornæ) of Southern Europe. It has a hornlike organ projecting forward from each pectoral fin. It sometimes becomes twenty feet long and twenty-eight feet broad, and weighs over a ton. Called also sea devil.

Webster 1913

• (Geom.), a definite system of rays.

Webster 1913

• (Persp.), the line drawn through the point of sight perpendicular to the perspective plane.

Webster 1913

• noun United States writer of science fiction (born 1920)
  Ray Bradbury; Bradbury.
  

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• noun American psychologist (born in England) who developed a broad theory of human behavior based on multivariate research (1905-1998)
  Cattell; Raymond Bernard Cattell; R. B. Cattell; Raymond B. Cattell.
  

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• noun United States writer of science fiction (born 1920)
  Ray Bradbury; Bradbury.
  

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• noun small flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flower
  ray floret.
  

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• noun small flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flower
  ray floret.
  

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• (Bot.), one of the marginal flowers of the capitulum in such composite plants as the aster, goldenrod, daisy, and sunflower. They have an elongated, strap-shaped corolla, while the corollas of the disk flowers are tubular and five-lobed.

Webster 1913

Ray" grass`

Etymology

Etymol. of ray is uncertain.

Definitions

1. (Bot.) A perennial European grass (Lolium perenne); -- called also rye grass, and red darnel. See Darnel, and Grass.

Webster 1913

• noun United States electrical engineer who devised the Dolby system used to reduce background noise in tape recording
  Dolby.
  

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• noun a column of light (as from a beacon)
  shaft; irradiation; shaft of light; beam; beam of light; light beam; ray.
  

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• (Geom.), the common point of a pencil of rays.

Webster 1913

• noun United States prizefighter who won the world middleweight championship five times and the world welterweight championship once (1921-1989)
  Walker Smith; Ray Robinson; Robinson.
  

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• noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
  X ray; X-radiation; roentgen ray.
  

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• (Phys.), a kind of ray generated in a very highly exhausted vacuum tube by the electrical discharge. It is capable of passing through many bodies opaque to light, and producing photographic and fluorescent effects by which means pictures showing the internal structure of opaque objects are made, called radiographs, or sciagraphs or X-ray photographs, radiograms, or X-rays . So called from the discoverer, W. C. Röntgen.

Webster 1913

• . Same as Angel fish (a), under Angel.

Webster 1913

• (Zoöl.), a fin ray which is articulated and usually branched.

Webster 1913

• noun ray with back covered with white or yellow spots; widely distributed in warm seas
  spotted eagle ray; Aetobatus narinari.
  

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• noun ray with back covered with white or yellow spots; widely distributed in warm seas
  spotted eagle ray; Aetobatus narinari.
  

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• (Zoöl.), a European skate (Raita radiata); so called from the stellate bases of the dorsal spines.
• a common European skate (Raia radiata).

Webster 1913

• any one of numerous species of rays of the family Trygonidæ having one or more large, sharp, barbed dorsal spines on the whiplike tail. Called also stingaree.

Webster 1913

• noun United States prizefighter who won the world middleweight championship five times and the world welterweight championship once (1921-1989)
  Walker Smith; Ray Robinson; Robinson.
  

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• noun a ray of artificial ultraviolet light from a sunray lamp
  sunray.
  

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• noun a mercury-vapor lamp used in medical or cosmetic treatments
  sun lamp; sunray lamp; sunlamp.
  

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• noun a sheet of vascular tissue separating the vascular bundles
  medullary ray.
  

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• a line from the eye, or point of sight.

Webster 1913

• (Zoöl.), the European eagle ray. See under Ray.

Webster 1913

• noun herb with basal leaves and leafy hairy stems bearing solitary flower heads with white or pale cream-colored rays; northwestern United States
  Wyethia helianthoides.
  

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• noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
  X ray; X-radiation; roentgen ray.
  
• noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
  X ray; X-ray photograph; roentgenogram; X-ray.
  

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• the Röntgen ray; so called by its discoverer because of its enigmatical character, x being an algebraic symbol for an unknown quantity.

Webster 1913

• noun electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target
  X ray; X-radiation; roentgen ray.
  
• noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
  X ray; X-ray photograph; roentgenogram; X-ray.
  
• verb examine by taking x-rays
  x-ray.
  
• verb take an x-ray of something or somebody
  x-ray.
  
  • The doctor x-rayed my chest

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• noun the scattering of X rays by the atoms of a crystal; the diffraction pattern shows structure of the crystal
  

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• noun photographic film used to make X-ray pictures
  

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• noun an apparatus that provides a source of X rays
  

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• noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
  X ray; X-ray photograph; roentgenogram; X-ray.
  

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• noun radiography that uses X-rays to produce a roentgenogram
  roentgenography.
  

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• noun a radiogram made by exposing photographic film to X rays; used in medical diagnosis
  X ray; X-ray photograph; roentgenogram; X-ray.
  

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• noun the therapeutic use of X rays
  

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• noun a vacuum tube containing a metal target onto which a beam of electrons is directed at high energy for the generation of X rays
  

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• noun obtaining images by the use of X rays
  X-radiation.
  
• verb examine by taking x-rays
  x-ray.
  
• verb take an x-ray of something or somebody
  x-ray.
  
  • The doctor x-rayed my chest

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