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
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Next, in 1976, it was proposed that DMT might be a neurotransmitter, akin to serotonin and dopamine, that has a functional role in the body. Oshan Jarow, Vox, 4 Nov. 2024 Several bodily processes involve serotonin, including blood clotting, sleep, appetite, and memory. Kirstyn Hill, Pharmd, Mph, Health, 27 Oct. 2024 Sunlight provides us with vitamin D and plays a crucial role in regulating the production of serotonin and dopamine, two key neurotransmitters. Dominique Fluker, Essence, 1 Oct. 2024 When estrogen levels drop, so do serotonin levels, increasing the likelihood of migraine. Lori Youmshajekian, WIRED, 23 Sep. 2024 See all Example Sentences for serotonin 

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 26 Nov. 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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