1

gray

play
adjective \ˈgrā\
variants: or less commonly

Definition of gray

  1. 1a :  of the color grayb :  tending toward gray blue-gray eyesc :  dull in color

  2. 2 :  having the hair gray :  hoary

  3. 3 :  clothed in gray

  4. 4a :  lacking cheer or brightness in mood, outlook, style, or flavor; also :  dismal, gloomy a gray dayb :  prosaically ordinary :  dull, uninteresting the boring, gray dullness of government — P. J. O'Rourke

  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

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
variants: or less commonly

Definition of gray

  1. 1 :  something (such 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. 3a :  a soldier in the Confederate army during the American Civil Warb often capitalized :  the Confederate army

Origin and Etymology of gray

see 1gray


First Known Use: before 12th century


3

gray

verb
variants: or less commonly

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 The town's population has grayed over the last two decades.

Origin and Etymology of gray

see 1gray


First Known Use: 14th century


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 American botanist


Gray

biographical name

Definition of Gray

  1. Thomas 1716–1771 English 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\
variants: also

grey

\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

2

gray

noun
variants: also

grey

Definition of gray for Students

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


3

gray

verb
variants: also

grey

Definition of gray for Students

grayed

also

greyed

;

graying

also

greying

  1. :  to make or become gray graying hair


Medical Dictionary

1

gray

noun
variants: or chiefly British

grey

\ˈgrā\play

Medical Definition of gray

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

gray

or chiefly British

grey

adjective

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.



Seen and Heard

What made you want to look up gray? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to link together in a series or chain

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • winning-words-from-the-national-spelling-bee-logo
  • Which is the correct spelling of the winning word from 1988?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!