Serotonin Definition

sĕrə-tōnĭn, sîr-
noun
A complex amine, C10H12N2O, found in blood, the brain, etc. or produced synthetically: it constricts the blood vessels and contracts smooth muscle tissue, and is important as both a neurotransmitter and a hormone.
Webster's New World

(biochemistry) An indoleamine neurotransmitter, 5-hydroxytryptamine, that is involved in depression, appetite, etc., and is crucial in maintaining a sense of well-being, security, etc.

Wiktionary
Synonyms:
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Origin of Serotonin

  • From sero- + tonic + -in.

    From Wiktionary

  • sero– ton(e) –in

    From American Heritage Dictionary of the English Language, 5th Edition

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