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acetylcholine
noun
ace·tyl·cho·line
ə-ˌse-tᵊl-ˈkō-ˌlēn
-ˌsē-;
ˈa-sə-ˌtēl-
: a neurotransmitter [C7H16NO2]+ released at autonomic synapses and neuromuscular junctions and formed enzymatically in the tissues from choline
Examples of acetylcholine in a Sentence
Recent Examples on the Web
Low acetylcholine: Generally, low acetylcholine is noted with Alzheimer’s disease and can be associated with a decline in memory.
—Smita Patel, Verywell Health, 25 Sep. 2024
Anticholinergic drugs block the neurotransmitter acetylcholine (ACh) to treat muscle spasms and other health conditions.
—Mary Choy, Health, 9 Oct. 2024
By focusing on acetylcholine instead of dopamine, Cobenfy may reduce schizophrenia symptoms while avoiding common side effects like weight gain, drowsiness and movement disorders, clinical trials suggest.
—Dr. Jake Goodman, ABC News, 26 Sep. 2024
Common neurotransmitters include serotonin, epinephrine, dopamine, acetylcholine, and gamma-aminobutyric acid (GABA).
—Smita Patel, Verywell Health, 25 Sep. 2024
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Word History
First Known Use
1906, in the meaning defined above
Dictionary Entries Near acetylcholine
Cite this Entry
“Acetylcholine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acetylcholine. Accessed 13 Dec. 2024.
Kids Definition
acetylcholine
noun
ace·tyl·cho·line
ə-ˌset-ᵊl-ˈkō-ˌlēn
-ˌsēt-;
ˈas-ə-ˌtēl-
: a compound released at autonomic nerve endings that functions in carrying nerve impulses
Medical Definition
acetylcholine
noun
ace·tyl·cho·line
ə-ˌset-ᵊl-ˈkō-ˌlēn
-ˌsēt-; ˌas-ə-ˌtēl-
: a neurotransmitter [C7H16NO2]+ released at autonomic synapses and neuromuscular junctions, active in the transmission of nerve impulses, and formed enzymatically in the tissues from choline
More from Merriam-Webster on acetylcholine
Nglish: Translation of acetylcholine for Spanish Speakers
Britannica.com: Encyclopedia article about acetylcholine
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