n. [ NL. melanurus, fr. Gr. me`las, me`lanos, black + 'oura` tail. ] (Zool.) A small fish of the Mediterranean; a gilthead. See Gilthead (a). [ 1913 Webster ]
a. [ Melam + urea. ] (Chem.) Pertaining to, or designating, a complex nitrogenous acid obtained by decomposition of melam, or of urea, as a white crystalline powder; -- called also melanurenic acid. [ 1913 Webster ]