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Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
beta-lactamase is a noun meaning "enzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibiotic". It carries one recorded sense.
enzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibiotic
Definitions, synonyms and semantic relations for beta-lactamase come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.