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Definition of Metachrosis
1. n. The power of changing color at will by the expansion of special pigment cells, under nerve influence, as seen in many reptiles, fishes, etc.
Definition of Metachrosis
1. Noun. (zoology) The ability to change colour by the expansion and contraction of chromatophores ¹
¹ Source: wiktionary.com
Medical Definition of Metachrosis
1.