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acetylcholine

[uh-seet-l-koh-leen, uh-set-, as-i-tl-] /əˌsit lˈkoʊ lin, əˌsɛt-, ˌæs ɪ tl-/
noun
1.
Biochemistry. the acetic acid ester of choline, C 7 H 17 NO 3 , released and hydrolyzed during nerve conduction and causing muscle action by transmitting nerve impulses across synapses.
2.
Pharmacology. this substance used in its chloride form in eye surgery.
Abbreviation: ACh.
Origin
1905-1910
1905-10; acetyl + choline
Related forms
acetylcholinic
[uh-seet-l-koh-lin-ik, uh-set-, as-i-tl-] /əˌsit l koʊˈlɪn ɪk, əˌsɛt-, ˌæs ɪ tl-/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for acetylcholine
  • More specialised cells use dopamine, serotonin, acetylcholine and a variety of other molecules.
  • Most of them prevent the breakdown of acetylcholine, a neurotransmitter.
  • When the command signal arrives, the nerve terminal releases a minute puff of acetylcholine, a neurotransmitter.
  • One obvious suspect is the receptor for the brain chemical acetylcholine, which happens to respond strongly to nicotine as well.
  • Those genes code for nicotinic acetylcholine receptors, cell-surface proteins that selectively bind to nicotine molecules.
  • Lambert-Eaton syndrome occurs when nerves cells do not release enough of a chemical called acetylcholine.
  • acetylcholine is a neurotransmitter that is important for learning and memory.
British Dictionary definitions for acetylcholine

acetylcholine

/ˌæsɪtaɪlˈkəʊliːn; -lɪn/
noun
1.
a chemical substance secreted at the ends of many nerve fibres, esp in the autonomic nervous system, and responsible for the transmission of nervous impulses. Formula: CH3CO2(CH2)2N (CH3)3+
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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acetylcholine in Medicine

acetylcholine a·ce·tyl·cho·line (ə-sēt'l-kō'lēn')
n.
Abbr. Ach
A white crystalline derivative of choline that is released at the ends of nerve fibers in the somatic and parasympathetic nervous systems and is involved in the transmission of nerve impulses in the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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acetylcholine in Science
acetylcholine
  (ə-sēt'l-kō'lēn')   
A substance that is released at the junction between neurons and skeletal muscle fibers, at the nerve endings of the parasympathetic nervous system, and across synapses in the central nervous system, where it acts as a neurotransmitter. Chemical formula: C7H16NO2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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