greying


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Related to greying: graying

gray 1

also grey  (grā)
adj. gray·er, gray·est also grey·er or grey·est
1. Of or relating to an achromatic color of any lightness between the extremes of black and white.
2.
a. Dull or dark: a gray, rainy afternoon.
b. Lacking in cheer; gloomy: a gray mood.
3.
a. Having gray hair; hoary.
b. Old or venerable.
4. Intermediate in character or position, as with regard to a subjective matter: the gray area between their differing opinions on the film's morality.
n.
1. An achromatic color of any lightness between the extremes of black and white.
2. An object or animal of the color gray.
3. often Gray
a. A member of the Confederate Army in the Civil War.
b. The Confederate Army.
v. grayed, gray·ing, grays also greyed or grey·ing or greys
v.tr.
To make gray.
v.intr.
1. To become gray.
2.
a. To become old; age.
b. To include a large or increasing proportion of older people: "Federal food programs can't keep up with the nation's rapidly graying population" (Michael J. McCarthy).

[Middle English grei, from Old English grǣg.]

gray′ly adj.
gray′ness n.

gray 2

 (grā)
n. Abbr. Gy
The SI unit for the energy absorbed from ionizing radiation, equal to one joule per kilogram.

[After Louis Harold Gray (1905-1965), British radiobiologist.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

greying

(ˈɡreɪɪŋ) or

graying

adj
becoming grey
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Translations

greying

graying (US) [ˈgreɪɪŋ] ADJ [hair] → grisáceo, canoso
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

greying

[ˈgreɪɪŋ] (British) graying (US) adj [hair, beard] → grisonnant(e); [man, woman] → grisonnant(e)
Collins English/French Electronic Resource. © HarperCollins Publishers 2005
References in periodicals archive ?
Human hair greying is linked to a specific depletion of hair follicle melanocytes affecting both the bulb and the outer root sheath.
Interestingly, scientists have discovered that it's not just our genes that determine when we turn grey and that a natural build-up of hydrogen peroxide, which causes massive oxidative stress and greying in the hair follicle, may also play a huge part.
Interestingly, scientists have discovered that it's not just our genes that determine when we turn grey, and that a natural build-up of hydrogen peroxide, which causes massive oxidative stress and greying in the hair follicle, may also play a huge part.