cholinesterase [koh-luh-nes-tuh-reys, -reyz, kol-uh-] Word Origin noun Biochemistry.

  1. an enzyme, found especially in the heart, brain, and blood, that hydrolyzes acetylcholine to acetic acid and choline.

Origin of cholinesterase First recorded in 1930–35; choline + esterase British Dictionary definitions for cholinesterase cholinesterase noun

  1. an enzyme that hydrolyses acetylcholine to choline and acetic acid

cholinesterase in Medicine cholinesterase [kō′lə-nĕs′tə-rās′, -rāz′] n.

  1. An enzyme that catalyzes the hydrolysis of choline esters chiefly at nerve terminals, where it hydrolyzes and inactivates acetylcholine.acetylcholinesterase
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