A type of compound consisting of carbohydrate units covalently linked with other types of chemical constituent.
Sources:
PAC, 1988, 60, 1389. 'Nomenclature of glycoproteins, glycopeptides and peptidoglycans (Recommendations 1985)' on page 1390 (https://doi.org/10.1351/pac198860091389)
White Book, 2nd ed., p. 84 (https://iupac.qmul.ac.uk/bibliog/white.html)