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beta-lactam in Medicine

beta-lactam

n.
  1. Any of a class of broad-spectrum antibiotics that are structurally and pharmacologically related to the penicillins and cephalosporins.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.