gray Definition

gray¹
noun

1. (symbol Gy) the SI unit of absorbed dose of ionizing radiation, equivalent to one joule per kilogram.

Etymology: 1970s: named after L H Gray (1905-65), British radiobiologist.

---

gray² grey

---

grey
gray
adj greyer, greyest

1. Of a colour between black and white, the colour of ash and slate.
2. Said of the weather: dull and cloudy.
3a. Said of a someone's hair: turning white;
3b. Said of a person: having grey hair.
4. derog
Anonymous or uninteresting; having no distinguishing features.
Example: a grey character
5. literary
Aged, mature or experienced.
Thesaurus: aged, old, venerable, grizzled, hoary, decrepit.
6. colloq
Referring or relating to elderly or retired people.
Example: the grey population

noun greys

1. A colour between black and white.
2. Grey material or clothes.

Example: dressed in grey
3. Dull light.
4. An animal, especially a horse, that is grey or whitish in colour.

verb

tr & intr
greyed, greying
1. To make or become grey.

Derivative: greyish
adj

Derivative: greyly
adverb

Derivative: greyness
noun

Etymology: Anglo-Saxon grei.