酰 xiān acyl Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 酰基是这类有机化合物的核心结构。 xiān jī shì zhè lèi yǒujī huàhéwù de héxīn jiégòu. The acyl group is the core structure of this class of organic compounds. Source: Dong Chinese Dictionary