Breadcrumb Home > Thesaurus > P Synonyms of penicillin Find synonyms for: Noun 1. penicillin, antibiotic, antibiotic drug usage: any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of penicillin (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: nemesis Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language