n.
Pronunciation: ˌ pe-n ə - ' si-l ə - ˌ m ē n
Function: noun
Etymology: penicill in + amine
Date: 1943
: an amino acid C 5 H 11 NO 2 S that is obtained from penicillins and is used especially in the treatment of cystinuria, rheumatoid arthritis, and poisoning by metals (as copper or lead)