the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad | horse of a light gray or whitish color |
| clothing that is a grey color |
| a neutral achromatic color midway between white and black |
| any organization or party whose uniforms or badges are grey |
| the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad |