peptidoglycan

[pĕp′tĭ-dō-glīkən, -kăn′]
n.
  1. A polymer found in the cell walls of prokaryotes that consists of polysaccharide and peptide chains in a strong molecular network.mucopeptide murein
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.