a card of controlled reflectance held near a subject to approximate middle tones and used as a target for an exposure meter.
- Gray cataract
gray cataract n. A cataract of gray color usually occurring in senile, mature, or cortical cataracts.
noun 1. See under . [kat-burd] /ˈkætˌbɜrd/ noun 1. any of several American or Australian birds having catlike cries, especially Dumetella carolinensis (gray catbird) of North America. /ˈkætˌbɜːd/ noun 1. any of several North American songbirds of the family Mimidae (mockingbirds), esp Dumetella carolinensis, whose call resembles the mewing of a cat 2. any of […]
- Gray-cheeked thrush
[grey-cheekt] /ˈgreɪˌtʃikt/ noun 1. a North American thrush, Catharus minimus, having olive upper parts and grayish cheeks.
- Gray code
noun 1. a modification of a number system, esp a binary code, in which any adjacent pair of numbers, in counting order, differ in their digits at one position only, the absolute difference being the value 1 hardware A binary sequence with the property that only one bit changes between any two consecutive elements (the […]