Penicillin

Definitions

1. Any of a group of narrow-spectrum antibiotics obtained from Penicillium molds or synthesized, that have a beta-lactam structure and are active against gram-positive bacteria and used in the treatment of various infections and diseases.
   countable, uncountable
2. A blue mold of the genus Penicillium that produces penicillin.
   countable, uncountable

Equivalents

CEFR level