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countershading
coun·ter·shad·ing C0689800 (koun′tər-shā′dĭng)n. Coloration of an animal in which the upper side is darker in color than the underside, thought to be a form of camouflage.countershading (ˌkaʊntəˈʃeɪdɪŋ) n (Zoology) (in the coloration of certain animals) a pattern, serving as camouflage, in which dark colours occur on parts of the body exposed to the light and pale colours on parts in the shadecoun•ter•shad•ing (ˈkaʊn tərˌʃeɪ dɪŋ)
n. (of an animal) coloration that is dark on parts of the body surface that are usu. exposed to the sun and light on parts usu. in shade. [1895–1900] countershading
countershading coloration or pigmentation in animals in which the dorsal surface is dark in appearance and the ventral surface light, so that viewed from either above (dark on dark) or below (light on |