n. (Chem.) A nitrogenous substance resembling gelatin, obtained from certain algæ. [ Webster 1913 Suppl. ]
n. [ Phenyl + analgetic + -in. ] (Pharm.) An ammoniated compound of phenyl and acetamide, used as an analgesic and antipyretic. It resembles phenacetin in its therapeutic action. [ Webster 1913 Suppl. ]