1

gray

adjective \ˈgrā\

Definition of gray

  1. 1 a :  of the color gray b :  tending toward gray <blue-gray eyes> c :  dull in color

  2. 2 :  having the hair gray :  hoary

  3. 3 :  clothed in gray

  4. 4 a :  lacking cheer or brightness in mood, outlook, style, or flavor; also :  dismal, gloomy <a gray day> b :  prosaically ordinary :  dull, uninteresting

  5. 5 :  having an intermediate and often vaguely defined position, condition, or character <an ethically gray area>

grayly

adverb

grayness

noun

Examples of gray in a sentence

  1. What will you do when you are old and gray?

  2. My friends have all gone gray.

  3. It was a gray winter day.

  4. the gray faces of the people in the crowd

Variants of gray

less commonly

\ˈgrā\

Origin and Etymology of gray

Middle English, from Old English grǣg; akin to Old High German grīs, grāo gray


First Known Use: before 12th century


2

gray

noun

Definition of gray

  1. 1 :  something (as an animal, garment, cloth, or spot) of a gray color

  2. 2 :  any of a series of neutral colors ranging between black and white

  3. 3 a :  a soldier in the Confederate army during the American Civil War b often capitalized :  the Confederate army

13th Century

First Known Use of gray

13th century

Variants of gray

less commonly


3

gray

verb

Definition of gray

  1. transitive verb
  2. :  to make gray

  3. intransitive verb
  4. 1 :  to become gray

  5. 2 :  age; also :  to contain an increasing percentage of older people

14th Century

First Known Use of gray

14th century

Variants of gray

less commonly


4

gray

noun

Definition of gray

  1. :  the mks unit of absorbed dose of ionizing radiation equal to an energy of one joule per kilogram of irradiated material —abbreviation Gy

Origin and Etymology of gray

Louis H. Gray †1965 British radiobiologist


First Known Use: 1975


Gray

play
biographical name \ˈgrā\

Definition of Gray

  1. Asa 1810–1888 Am. botanist


Gray

biographical name

Definition of Gray

  1. Thomas 1716–1771 Eng. poet



GRAY Defined for English Language Learners


3

gray

verb

Definition of gray for English Language Learners

  • : to become gray

  • : to become older


GRAY Defined for Kids

1

gray

adjective \ˈgrā\

Definition of gray for Students

grayer

also

greyer

grayest

also

greyest

  1. 1 :  of a color that is a blend of black and white <a gray stone>

  2. 2 :  having gray hair <a gray old man>

  3. 3 :  lacking cheer or brightness <a gray day>

grayness

noun

Variants of gray

also

grey

\ˈgrā\

2

gray

noun

Definition of gray for Students

  1. :  a color that is a blend of black and white

Variants of gray

also

grey


3

gray

verb

Definition of gray for Students

grayed

also

greyed

graying

also

greying

  1. :  to make or become gray <graying hair>

Variants of gray

also

grey


Medical Dictionary

1

gray

noun

Medical Definition of gray

  1. :  any of a series of neutral colors ranging between black and white

gray

or chiefly British

grey

adjective

Variants of gray

or chiefly British

grey

\ˈgrā\play

2

gray

play
noun \ˈgrā\

Medical Definition of gray

  1. :  the mks unit of absorbed dose of ionizing radiation equal to an energy of one joule per kilogram of irradiated material—abbreviation Gy

Biographical Note for gray

Gray

,

Louis Harold

(1905–1965), British radiobiologist. In 1933 Gray established a physics laboratory to measure radiation in the treatment of cancer at Mount Vernon Hospital, Middlesex, England. Earlier he and Sir W. H. Bragg had formulated a theory for deducing the energy absorbed by a material exposed to gamma rays from the ionization within a small gas-filled cavity in the material. At Mount Vernon he was to apply his theory to X-rays and later, in modified form, to neutrons. Gray expressed the neutron dose values in energy units, anticipating the International Commission on Radiological Units, which in 1953 adopted the rad as the unit for measuring all types of ionizing radiation. In 1975 the Commission adopted the gray as the physical unit of dose.



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