gray
1or grey
[ grey ]
/ greɪ /
adjective, gray·er, gray·est.
noun
verb (used with or without object)
to make or become gray.
Origin of gray
1
before 900; Middle English; Old English
grǣg; cognate with German
grau
OTHER WORDS FROM gray
gray·ly, adverb gray·ness, noun un·grayed, adjectiveWords nearby gray
Definition for gray (2 of 3)
gray
2
[ grey ]
/ greɪ /
noun Physics.
the standard unit of absorbed dose of radiation (such as x-rays) in the International System of Units(SI), equal to the amount of ionizing radiation absorbed when the energy imparted to matter is 1 J/kg (one joule per kilogram). Abbreviation: Gy
Compare
rad.
Origin of gray
2
First recorded in 1975; named in honor of Louis Harold
Gray (1905–65), English radiobiologist
Definition for gray (3 of 3)
Gray
[ grey ]
/ greɪ /
noun
A·sa
[ey-suh] /ˈeɪ sə/,1810–88,
U.S. botanist.
Robert,1755–1806,
U.S. explorer and sea captain: discovered the Columbia River.
Thomas,1716–71,
English poet.
Example sentences from the Web for gray
British Dictionary definitions for gray (1 of 3)
Derived forms of gray
grayish, adjective grayly, adverb grayness, nounBritish Dictionary definitions for gray (2 of 3)
gray
2
/ (ɡreɪ) /
noun
the derived SI unit of absorbed ionizing radiation dose or kerma equivalent to an absorption per unit mass of one joule per kilogram of irradiated material. 1 gray is equivalent to 100 rads
Symbol: Gy
Word Origin for gray
C20: named after Louis Harold
Gray (1905–65), English physicist
British Dictionary definitions for gray (3 of 3)
Gray
/ (ɡreɪ) /
noun
Thomas. 1716–71, English poet, best known for his Elegy written in a Country Churchyard (1751)
Medical definitions for gray (1 of 2)
gray
[ grā ]
n.
A unit for a specific absorbed dose of radiation equal to 100 rads.
Medical definitions for gray (2 of 2)
Gray
Henry 1825?-1861
British anatomist whose work Anatomy, Descriptive and Surgical (1858), known as Gray's Anatomy, remains a standard text.
Scientific definitions for gray
gray
[ grā ]
The SI derived unit used to measure the energy absorbed by a substance per unit weight of the substance when exposed to radiation. One gray is equal to one joule per kilogram, or 100 rads. The gray is named after British physicist Louis Harold Gray (1905-1965).
Idioms and Phrases with gray
gray