Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A synthetic antibiotic, C13H17N5O8S2, that acts against a wide spectrum of gram-negative bacteria.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A synthetic monobactam originally isolated from Chromobacterium violaceum, similar in action to penicillin.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an antibiotic (trade name Azactam) used against severe infections; has minimal side effects

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Variant of azthreonam : az(o)– + threon(ine) (used as a template for the antibiotic's chirality) + (beta-lact)am, cyclic amide occurring in penicillins; see beta-lactamase.]

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