STEREOISOMER Meaning of STEREOISOMER in English [ ˌstɛrɪəʊ'ʌɪsəmə , ˌstɪə- ]■ noun Chemistry each of two or more molecules differing only in the spatial arrangement of their atoms.Derivatives~ic adjective~ism noun Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004