proteoglycans From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounAny of many glycoproteins that have heteropolysaccharide side chains Related wordsSynonymsheparansulfatedglycoproteinspeptidoglycanglycosaminoglycansglycosaminoglycanglycoproteinpolysaccharidesproteasesglycosylatedglycosylationpolysaccharidemucopolysaccharidesglycansproteolyticglycosides References Wiktionary — proteoglycans Wikipedia — proteoglycans