penicillinase

noun
pen·​i·​cil·​lin·​ase | \ ˌpe-nə-ˈsi-lə-ˌnās How to pronounce penicillinase (audio) , -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

Learn More About penicillinase

Time Traveler for penicillinase

Time Traveler

The first known use of penicillinase was in 1940

See more words from the same year

Dictionary Entries Near penicillinase

penicillin

penicillinase

penicillinic acid

See More Nearby Entries 

Statistics for penicillinase

Cite this Entry

“Penicillinase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/penicillinase. Accessed 21 May. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for penicillinase

penicillinase

noun
pen·​i·​cil·​lin·​ase | \ -ˈsil-ə-ˌnās, -ˌnāz How to pronounce penicillinase (audio) \

Medical Definition of penicillinase

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

More from Merriam-Webster on penicillinase

Britannica.com: Encyclopedia article about penicillinase

WORD OF THE DAY

Test Your Vocabulary

Name That Color

  • a light greenish blue color
  • Name that color:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!