Main definitions of gray in English

: gray1gray2

gray1

(British grey)

adjective

  • 1Of a color intermediate between black and white, as of ashes or an overcast sky.

    ‘gray flannel trousers’
    greyish, silvery
    white, silver, hoary
    ashen, wan, pale, pasty, pallid, colourless, sallow, leaden, bloodless, anaemic, white, waxen, chalky
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    1. 1.1 (of the weather) cloudy and dull; without sun.
      ‘a cold, gray November day’
      cloudy, overcast, dull, dim, dark, sunless
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    2. 1.2 (of a person) having gray hair.
      ‘a gray, fatherly gentleman’
      grey-haired, hoary, grizzled
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    3. 1.3informal Relating to old people, especially when seen as an oppressed group.
      ‘the political power of the gray vote’
      grey-haired, hoary, grizzled
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    4. 1.4 (of a person's face) pale, as through tiredness, age, or illness.
      ‘a few people, their faces gray and bitter’
      pale, deathly pale, pallid, white, bloodless, ashen, ashen-faced, ashy, chalky, chalk-white, grey, white-faced, whey-faced, waxen, waxy, corpse-like, deathlike, ghostly
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  • 2Dull and nondescript; without interest or character.

    ‘gray, faceless men’
    ‘the gray daily routine’
    characterless, colourless, nondescript, unremarkable, faceless
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  • 3(of financial or trading activity) not accounted for in official statistics.

    ‘the gray economy’
    unofficial, informal, irregular, back-door
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noun

  • 1Gray color or pigment.

    ‘dirty intermediate tones of gray’
    1. 1.1 Gray clothes or material.
      ‘the gentleman in gray’
    2. 1.2 Gray hair.
      ‘he sighed at the amount of gray at his temple’
    3. 1.3usually Gray The Confederate army in the Civil War, or a member of that army.
  • 2A gray thing or animal, in particular a gray or white horse.

verb

[NO OBJECT]
  • 1(especially of hair) become gray with age.

    ‘he had put on weight and grayed somewhat’
    ‘a man of about fifty with graying hair’
    1. 1.1 (of a person or group) become older; age.
      ‘a graying workforce’
      age, get old, grow old, mature
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Phrasal Verbs

  • gray something out

    • Display a menu option in a light font to indicate that it is not available.

      ‘all the property fields on the Shortcut tab are either missing or grayed out’

Origin

Old English grǣg, of Germanic origin; related to Dutch grauw and German grau.

Pronunciation

gray

/ɡreɪ//ɡrā/

Main definitions of gray in English

: gray1gray2

gray2

(also Gy)

noun

Physics
  • The SI unit of the absorbed dose of ionizing radiation, corresponding to one joule per kilogram.

    • ‘Thus for these particular radiations the dose equivalent in sieverts is numerically equal to the absorbed dose in grays.’
    • ‘When a doctor prescribes a treatment he will define it in terms of dose in Grays required at a point.’
    • ‘The sievert is numerically equivalent to the gray for electrons and for X-rays irradiating the whole body.’
    • ‘Radiation doses are measured in rads or grays, where 1 gray equals 100 rads.’
    • ‘To calculate the dose equivalent one of the workers would receive in sieverts, you would need to multiply the dose in grays, by the quality factor.’

Origin

1970s: named after Louis H. Gray (1905–65), English radiobiologist.

Pronunciation

gray

/ɡreɪ//ɡrā/