noun🔗Share羟基,氢氧基 A 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. "科学家给分子添加了一个羟基,使它变成了一种醇类物质。chemistrybiochemistrycompoundsubstanceChat with AIVocabulary GamePractice Reading