Gray has 20 different meanings across 4 categories:
Noun · Verb · Adjective · Proper Noun
English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)
"The textbook explained that the gray, a standard unit for measuring radiation absorption, is named after the British radiobiologist Louis Harold Gray."
English poet best known for his elegy written in a country churchyard (1716-1771)
"Gray is often remembered as the author of 'Elegy Written in a Country Churchyard,' which remains one of the most famous poems from the eighteenth century."
American navigator who twice circumnavigated the globe and who discovered the Columbia River (1755-1806)
"The historical map credits Gray as the American navigator who twice circumnavigated the globe and who discovered the Columbia River."
An achromatic colour intermediate between black and white.
"The doctor explained that her breast cancer treatment had delivered a total gray dose to ensure all remaining tumor cells were destroyed."
In the International System of Units, the derived unit of absorbed dose of radiation (radiation absorbed by a patient); one joule of energy absorbed per kilogram of the patient's mass. Symbol: Gy
In plain English: Gray is a color that sits right between black and white on the spectrum.
"The old man's hair had turned completely gray over the years."
Usage: Do not use "gray" as a noun to mean radiation dosage in everyday conversation; that scientific definition belongs strictly to technical or medical contexts. In daily life, the word functions only as an adjective describing a color between black and white.
To become gray.
"After spending years working outdoors under the harsh sun, his hair began to turn a silvery white."
In plain English: To gray means to turn your hair white or silver as you get older.
"The gray hair on his temples showed how many years he had spent working hard."
Usage: Use "gray" as a verb when describing something that changes color to a dull shade of gray or when hair turns white with age. It is often interchangeable with "grey," though American English typically prefers the single 'a' spelling for both noun and verb forms.
showing characteristics of age, especially having grey or white hair
"whose beard with age is hoar"
"nodded his hoary head"
Having a color somewhere between white and black, as the ash of an ember.
"The fire had burned down to nothing but glowing gray embers in the hearth."
In plain English: Gray is the color that sits right between black and white on the color spectrum.
"The old dog had gray fur around its muzzle."
Usage: Use gray to describe anything with a color intermediate between white and black, such as storm clouds or weathered stone. Avoid using it for people unless referring specifically to hair that has lost its pigment.
A surname, from nicknames; originally a nickname for someone with a gray beard or hair.
"The town council was chaired by Mayor Gray, whose family name traces back to an ancestor known for his distinguished white hair."
The word gray comes from Old English grǣġ, which originally meant "green" before shifting to describe the color we know today. It traveled into English through Middle English and has roots in Proto-Indo-European *ǵʰreh₁-, reflecting an ancient connection between greenery and this shade.