CYSTINE Meaning of CYSTINE in English [ 'sɪsti:n , -tɪn ]■ noun Biochemistry an oxidized dimeric form of cysteine.OriginC19: from Gk kustis 'bladder' (because it was first isolated from urinary calculi) + -ine 4 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004