noun🔗ShareHydroxyleA univalent radical or functional group (–OH) in organic chemistry; present in alcohols, phenols, carboxylic acids and certain other classes of compounds."The scientist added a hydroxyl group to the molecule to make it a type of alcohol. "Le scientifique a ajouté un groupe hydroxyle à la molécule pour en faire un type d'alcool.chemistrybiochemistrycompoundsubstanceChat with AIVocabulary GamePractice Reading