penicillinase

noun pen·i·cil·lin·ase \ ˌpe-nə-ˈsi-lə-ˌnās , -ˌnāz \

Definition of penicillinase

: beta-lactamase; specifically : a beta-lactamase that hydrolyzes and inactivates penicillin

First Known Use of penicillinase

1940

in the meaning defined above

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Medical Dictionary

penicillinase

noun pen·i·cil·lin·ase \ -ˈsil-ə-ˌnās, -ˌnāz \

medical Definition of penicillinase

: beta-lactamase; specifically : a beta-lactamase that hydrolyzes and inactivates penicillin

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