noun Etymology: sero- + tonic + 1-in Date: 1948 a phenolic amine neurotransmitter C 10 H 12 N 2 O that is a powerful vasoconstrictor and is found especially in the brain, blood serum, and gastric mucous membrane of mammals
SEROTONIN
Meaning of SEROTONIN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012