Definition of lactam in English:

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Pronunciation: /ˈlaktam/


An organic compound containing an amide group —NHCO— as part of a ring.
Example sentences
  • Among studies with different lactams, the monotherapy lactam provided broader coverage than the combination lactam in 13 studies, the opposite occurring in two studies.
  • We included nine randomised controlled trials eight of which compared a lactam antibiotic with a lactam and aminoglycoside.
  • It consists of a nitrogen mustard (alkylating molecule) bound to a modified steroid, a lactam, characterized by the group - CO-NH, via a phenylacetic bond and has been synthesized in pure form.


Late 19th century: blend of lactone and amide.

For editors and proofreaders

Syllabification: lac·tam

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