Chroma-key
noun, Television.
1.
an electronic special-effects system for combining a desired background with live foreground action.
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- Chromat-
1. variant of before a vowel: chromatid.
- Chromate
[kroh-meyt] /ˈkroʊ meɪt/ noun 1. a salt of , as potassium chromate, K 2 CrO 4 . /ˈkrəʊˌmeɪt/ noun 1. any salt or ester of chromic acid. Simple chromate salts contain the divalent ion, CrO42–, and are orange chromate chro·mate (krō’māt’) n. A salt of chromic acid. chromate (krō’māt’) A chemical compound containing the group […]
- Chromatic
[kroh-mat-ik, kruh-] /kroʊˈmæt ɪk, krə-/ adjective 1. pertaining to color or colors. 2. Music. /krəˈmætɪk/ adjective 1. of, relating to, or characterized by a colour or colours 2. (music) adj. 1590s (of music), “progressing by half-tones;” 1831 as “pertaining to color,” from Latin chromaticus, from Greek khromatikos “relating to color, suited for color,” from khroma […]
- Chromatic-aberration
noun, Optics. 1. the variation of either the focal length or the magnification of a lens system with different wavelengths of light, characterized by prismatic coloring at the edges of the optical image and color distortion within it. noun 1. a defect in a lens system in which different wavelengths of light are focused at […]
- Chromatic adaptation
noun 1. (botany) the alteration by photosynthesizing organisms of the proportions of their photosynthetic pigments in response to the intensity and colour of the available light, as shown by algae in the littoral zone, which change from green to red as the zone is descended