Dictionary![]() ![]() pro•te•o•gly•canPronunciation: (prō"tē-ō-glī'kan), [key] —n. Biochem. a macromolecule composed of a polysaccharide joined to a polypeptide and forming the ground substance of connective tissue. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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