noun

serotonin

seh-ruh-TOH-nihn

noun

A brain chemical that helps regulate mood, appetite, and feelings of well-being.

"Exercise is known to boost serotonin levels naturally."

"Low serotonin is linked to symptoms of depression."

How to Use Serotonin

Learner’s notes

In plain EnglishA chemical messenger in the brain that helps control mood and happiness.

Common pairings

serotonin levels boost serotonin serotonin reuptake

serotonins plural

Study it as flashcards or scroll it in Flow — saved to your collection.

Can you complete this real example?

Exercise is known to boost _____ levels naturally.

Coined from "sero-" (from serum) plus "tone" and the chemical suffix "-in."

ronin