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gray

 [gra]
the SI unit of absorbed radiation dose, defined as the transfer of 1 joule of energy per kilogram of absorbing material (1 J/kg); 1 gray equals 100 rads.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

gray (Gy),

(grā),
The SI unit of absorbed dose of ionizing radiation, equivalent to 1 J/kg of tissue; 1 Gy = 100 rad.
Synonym(s): griseus
[Louis H. Gray, British radiologist, 1905-1965]
Farlex Partner Medical Dictionary © Farlex 2012
Radiation oncology noun The SI unit for radiation, based on actual radiation absorption, as measured by a thermoluminescent dosimeter placed within a patient or a phantom; 1 Gy is equal to 1 joule/kg of absorber, roughly equivalent to 100 rads
Vox populi adjective Referring to an older person, usually at or near the age of retirement
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

gray

Gy Radiation physics The SI unit for radiation, based on actual radiation absorption, as measured by a thermoluminescent dosimeter placed within a Pt or a phantom; 1 Gy is equal to 1 joule/kg of absorber–100 rads
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

gray

(grā)
The SI unit of absorbed dose of ionizing radiation, equivalent to 1 J/kg of tissue; 1 Gy = 100 rad.
[Louis H. Gray, British radiologist, 1905-1965]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

gray

A unit of absorbed dose of radiation equal to an energy absorption of 1 Joule per kilogram of irradiated material. 1 Gy is equivalent to 100 RADS. In radiotherapy, radiation is commonly applied to the area of the tumour in a dosage of around 2 Gy a day, five days a week for periods of 3–6 weeks.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

gray

(Gy) (grā)
The SI unit of absorbed dose of ionizing radiation, equivalent to 1 J/kg of tissue; 1 Gy = 100 rad.
[Louis H. Gray, British radiologist, 1905-1965]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Researchers found that the fewer the cells, the greyer the hair.
The colony strove to depict what its artists believed were the true tones of outdoor scenes, which meant paintings were greyer than others at the time.
Closer inspection reveals that this edition is some 50 pages shorter than its predecessor: Index and Contents have been omitted, there are fewer illustrations (most of them smaller and greyer than before) and Perriand's text has been much pruned and abbreviated, so the thrust of her words is frequently watered down, altered or lost.
Monobrowed Mancunian Noel Gallagher swaggered back for his first home town gig in 10 years - a little greyer, a little older, but still boasting the same boyish bluster of his Oasis heyday.
The new bottles will have a cloudier and greyer appearance than those that do not contain recycled plastic and the Co-op said it accepted that they could test shoppers' environmentally conscious credentials.
THE flossy ginger hair might be shorter and greyer than it used to be but, at 64, Hamish Stuart can still lay down a groove better than people half his age.
The intimacy of Eric's was complemented by an enthusiastic audience, a little older and greyer but still as loyal and passionate as they were back in the 80s.
Phil Kingsland, of knowthenet.org.uk, which carried out the study, said: "Parents may find it frustrating that web language moves so fast, but they need to have some understanding of what's going on so they can engage with and support kids through some of the greyer aspects of our cyber lives."
Tradition, colour and pageantry is what has sustained Britain for many years and it would be a much greyer country without it.
Especially since it's usually greyer than grey on those shows.
Meanwhile our Olympic tag line might be from "Grey to Greyer" or from "Bad to Worse".
There will be quite a lot of sunshine around on Saturday but it will be a cloudier and greyer day on Sunday," she said.