gray


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Related to gray: Gray code, gray matter

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.

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]

gray

(gra)
1. of a hue between white and black.
2. a unit of absorbed radiation dose equal to 100 rads. Abbreviated Gy.

gray (Gy)

the SI unit of absorbed radiation dose. One gray equals the energy equivalent of 1 J/kg of matter; 1 Gy equals 100 rad. See also radiation absorbed dose.
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

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

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]

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.

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]

Gray (Gy),

n a unit of measurement for an absorbed dose of radiation, from the French
Systéme International d'Unités; converts to the traditional rad by the formula 100 rad = 1 Gy.
References in classic literature ?
She told me she had discovered a wonderful young man who was going to help her in the East End, and that his name was Dorian Gray.
Dorian Gray is in the studio, sir," said the butler, coming into the garden.
At last a day came when he did not see Gray Brother at the signal place, and he laughed and headed the buffaloes for the ravine by the dhk tree, which was all covered with golden-red flowers.
But Gray could never forget that he had seemed to be, for a time, so close to the golden prize; and seven years after he had been set aside by the Western Union agreement, he reappeared with claims that had grown larger and more definite.
You will remember that Mowgli had left the village with the heavy weight of Shere Khan's raw hide on his shoulders, while Akela and Gray Brother trotted behind, so that the triple trail was very clearly marked.
From over a distant rise there floated a gray plume of smoke.
Yes, I feel like Byron's `Childe Harold' -- only it isn't really my `native shore' that I'm watching," said Anne, winking her gray eyes vigorously.
Bartley took her wrist and began to button the long gray suede glove.
When it was written, Ursula unwound the gray ball to a considerable depth, pinned the note on it, and rewound the yarn over it.
Julian Gray was her only surviving nephew, the son of a favorite sister whom she had lost.
The contrast between the pseudo-classical and the romantic attitude in this respect is clearly illustrated, as has often been pointed out, by the difference between the impressions recorded by Addison and by the poet Gray in the presence of the Alps.
Levin, who had long been familiar with these patriarchal methods, exchanged glances with Sviazhsky and interrupted Mihail Petrovitch, turning again to the gentleman with the gray whiskers.