A a


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [uh-seet-l-koh-leen, uh-set-, as-i-tl-]
    • /əˌsit lˈkoʊ lin, əˌsɛt-, ˌæs ɪ tl-/
    • /ə.ˌse.təlˈko.lin/
    • US Pronunciation
    • US IPA
    • [uh-seet-l-koh-leen, uh-set-, as-i-tl-]
    • /əˌsit lˈkoʊ lin, əˌsɛt-, ˌæs ɪ tl-/

Definitions of acetylcholine word

  • noun acetylcholine 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+ 3
  • noun acetylcholine the acetic acid ester of choline, (CH3)3N(OH)CH2CH2OCOCH3, found in many body tissues, esp. at neuromuscular junctions, acting as a nerve impulse transmitter: its chloride or bromide is used in medicine for various disorders 3
  • noun acetylcholine 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. 1
  • noun acetylcholine Pharmacology. this substance used in its chloride form in eye surgery. Abbreviation: ACh. 1
  • noun acetylcholine A compound that occurs throughout the nervous system, in which it functions as a neurotransmitter. 1
  • noun acetylcholine (biochemistry) A neurotransmitter in humans and other animals. It is an ester of acetic acid and choline with chemical formula CH3COOCH2CH2N+(CH3)3. 0

Information block about the term

Origin of acetylcholine

First appearance:

before 1905
One of the 15% newest English words
First recorded in 1905-10; acetyl + choline

Historical Comparancy

Parts of speech for Acetylcholine


acetylcholine popularity

A pretty common term. Usually people know it’s meaning, but prefer to use a more spread out synonym. About 63% of English native speakers know the meaning and use word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

acetylcholine usage trend in Literature

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See also

Matching words

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