noun
- Any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). penicillin. Retrieved September 21, 2026, from http://smartdefine.org/penicillin/definitions/1206650 |
| Chicago | WordNet. 2010. "penicillin" http://smartdefine.org/penicillin/definitions/1206650 (accessed September 21, 2026). |
| Harvard | WordNet 2010, penicillin, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/penicillin/definitions/1206650>. |
| MLA | WordNet. "penicillin" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/penicillin/definitions/1206650> |