noun Biochemistry.
  1. a macromolecule composed of a polysaccharide joined to a polypeptide and forming the ground substance of connective tissue.

Origin of proteoglycan

1969; prote(in) + -o- + glyc- + -an, variant of -ane Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

proteoglycan in Medicine


[prō′tē-ō-glīkăn′, -kən]
  1. Any of various mucopolysaccharides that are bound to protein chains in covalent complexes and occur in the extracellular matrix of connective tissue.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.