Share this entry
penicillinase Syllabification: pen·i·cil·lin·ase
Pronunciation: /ˌpenəˈsilənās/

Definition of penicillinase in English:


An enzyme that can inactivate penicillin, produced by certain bacteria.
Example sentences
  • For example, the resistance to penicillin initially was due to production of an enzyme penicillinase by bacteria, antibiotics like cloxallin were developed which was resistant to penicillinase enzyme.
  • A control gene regulates the production of an enzyme that destroys the antibiotic, e.g. penicillinase which destroys penicillin.
  • Penicillin was first used in the early 1940s and by 1950, most Staphylococcus aureus organisms were resistant to the drug by virtue of elaboration of a penicillinase enzyme.
Definition of penicillinase in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources