serotonin
(ser-o-to-nin)
4 syllables
Definition
noun. a complex amine; CHNO; found in blood; the brain; etc. or produced synthetically; it constricts the blood vessels and contracts smooth muscle tissue; and is important both as a neurotransmitter and a hormone
Example Sentence
Serotonin acts as a neurotransmitter that is involved in the control of pain perception.
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serotonin
