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Dictionary

gray

Pronunciation: (grā), [key]
—adj., -er, -est,
—n., v.

—adj.
1. of a color between white and black; having a neutral hue.
2. dark, dismal, or gloomy: gray skies.
3. dull, dreary, or monotonous.
4. having gray hair; gray-headed.
5. pertaining to old age; mature.
6. Informal.pertaining to, involving, or composed of older persons: gray households.
7. old or ancient.
8. indeterminate and intermediate in character: The tax audit concentrated on deductions in the gray area between purely personal and purely business expenses.

—n.
1. any achromatic color; any color with zero chroma, intermediate between white and black.
2. something of this color.
3. gray material or clothing: to dress in gray.
4. an unbleached and undyed condition.
5. (often cap.) a member of the Confederate army in the American Civil War or the army itself. Cf. blue (def. 5).
6. a horse of a gray color.
7. a horse that appears white but is not an albino.

—v.t., v.i.
to make or become gray. Also,grey.

gray

Pronunciation: (grā), [key]
—n. Physics.
the SI unit of absorbed dose, equal to the amount of ionizing radiation absorbed when the energy imparted to matter is 1 J/kg. Abbr.: Gy Cf. rad.