胆碱 dǎnjiǎn choline Origin Definitions Defs Strokes Stroke Words Sentences Sents 乙酰胆碱 yǐxiāndǎnjiǎn acetylcholine acetylcholine (ACh); a chemical that functions in the brain and body of many types of animals as a neurotransmitter胆碱酯酶 dǎnjiǎnzhǐméi cholinesterase an enzyme in the blood plasma that helps break down choline esters