serotonin

noun

se·​ro·​to·​nin ˌsir-ə-ˈtō-nən How to pronounce serotonin (audio)
ˌser-
: a phenolic amine neurotransmitter C10H12N2O that is a powerful vasoconstrictor and is found especially in the brain, blood serum, and gastric mucous membrane of mammals

Examples of serotonin in a Sentence

Recent Examples on the Web Anxiety and depression: CBD interaction with the serotonin receptors can work to reduce anxiety and depression, both of which interfere with sleep. Allison Futterman, Discover Magazine, 7 Aug. 2024 Unlike, other antidepressants that regulate chemicals like serotonin and dopamine in the brain, Spravato works by boosting glutamate in the brain. Bruce Gil, Quartz, 22 July 2024 The 2018 study supposed that consuming bananas could have an additional benefit due to their high concentration of tryptophan, a precursor of serotonin, which plays an important role in mood regulation. New Atlas, 23 July 2024 While short-term use of SSRIs, SNRIs, TCAs, and MAOIs reduces impulsivity and increases satiety, long-term use (longer than a year) can cause down regulation of serotonin receptors. Sandra Rose Salathe, Flow Space, 17 July 2024 See all Example Sentences for serotonin 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'serotonin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

sero- + ton(ic) entry 2 or tone entry 1 + -in entry 1, probably after angiotonin, earlier name for angiotensin — more at angiotensin

Note: Term introduced by Maurice M. Rapport, Arda Alden Green and Irvine H. Page in "Crystalline serotonin," Science, vol. 108, Issue 2804 (September 24, 1948), pp. 329-330: "The general behavior of the crystalline substance is suggestive of its homogeneity. We would like provisionally to name it serotonin, which indicates that its source is serum and its activity is one of causing constriction."

First Known Use

1948, in the meaning defined above

Time Traveler
The first known use of serotonin was in 1948

Dictionary Entries Near serotonin

Cite this Entry

“Serotonin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/serotonin. Accessed 19 Aug. 2024.

Medical Definition

serotonin

noun
se·​ro·​to·​nin ˌsir-ə-ˈtō-nən How to pronounce serotonin (audio) ˌser- How to pronounce serotonin (audio)
: a phenolic amine neurotransmitter C10H12N2O that is a powerful vasoconstrictor and is found especially in the brain, blood serum, and gastric mucous membrane of mammals

called also 5-HT, 5-hydroxytryptamine

More from Merriam-Webster on serotonin

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