noun
- A penicillin that is similar in antibiotic action to penicillin G but is obtained differently. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). penicillin o. Retrieved September 23, 2026, from http://smartdefine.org/penicillin_o/definitions/1206654 |
| Chicago | WordNet. 2010. "penicillin o" http://smartdefine.org/penicillin_o/definitions/1206654 (accessed September 23, 2026). |
| Harvard | WordNet 2010, penicillin o, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/penicillin_o/definitions/1206654>. |
| MLA | WordNet. "penicillin o" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/penicillin_o/definitions/1206654> |