n. [ Cf. F. méconine. ] (Chem.) A substance regarded as an anhydride of meconinic acid, existing in opium and extracted as a white crystalline substance. Also erroneously called
a. (Chem.) Pertaining to, or designating, an acid which occurs in opium, and which may be obtained by oxidizing narcotine. [ 1913 Webster ]
n. [ Gr.