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A substance, C7H17NO3, that is derived from choline and is released at the ends of nerve fibers in the somatic and parasympathetic nervous systems, where it mediates the transmission of nerve impulses.


(ˌæsɪtaɪlˈkəʊliːn; -lɪn)
(Biochemistry) 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+


(əˌsit lˈkoʊ lin, əˌsɛt-)

a short-acting neurotransmitter, widely distributed in the body, that functions as a nervous system stimulant, a vasodilator, and a cardiac depressant.
Abbr.: ACh
a•ce`tyl•cho•lin′ic (-ˈlɪn ɪk) adj.


A neurotransmitter that triggers activity by muscles or secretory glands.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.acetylcholine - a neurotransmitter that is a derivative of cholineacetylcholine - a neurotransmitter that is a derivative of choline; released at the ends of nerve fibers in the somatic and parasympathetic nervous systems
neurotransmitter - a neurochemical that transmits nerve impulses across a synapse
References in periodicals archive ?
Inhibition of acetylcholin esterase (AChE), the enzyme responsible for the hydrolysis of ACh, elevates ACh levels, and thus is considered a promising strategy for temporarily addressing AD symptoms, such as memory loss and confusion, though not for curing Alzheimer's disease or stopping it from progressing (Mesulam 2004).
Treatment also includes acetylcholin esterase inhibitors, music and movement therapy [25], carnitine, hyperbaric oxygen treatment [2], immunomodulation and anti-inflammatory treatment, oxytocin, and vision therapy, multivitamin/mineral complex, PUFA, elimination diets, acupuncture, auditory integration training, and massage [26].
The Danish researchers have therefore tested 22 abort inducing plants in the lab on rat tissue, and several of the plants had close to the same effect as the control drug acetylcholin.