METACHROSIS Meaning of METACHROSIS in English [ ˌmɛtə'krəʊsɪs ]■ noun Zoology the ability of some animals, e.g. chameleons, to change colour.OriginC19: mod. L., from meta- + Gk khrōsis 'colouring'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004