グリコサミノグリカングリコサミノグリカンMeanings1nounglycosaminoglycan; GAGBiochemistry term for a long unbranched polysaccharide; often abbreviated as GAG in scientific contexts.ヒアルロン酸さんはグリコサミノグリカンの一いっ種しゅです。Hyaluronic acid is a type of glycosaminoglycan.