[se.ro.to.nin] n [sero- + tonic + [1]-in] (1948): a phenolic amine neurotransmitter that is a powerful vasoconstrictor and is found esp. in the brain, blood serum, and gastric mucosa of mammals
SEROTONIN
Meaning of SEROTONIN in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012