- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
situation
-
occult
-
hotel bill
-
capacious
-
flux
-
venerate
-
transient
-
appellate
-
jarring
-
felicitously
- Hide translation
serotonin
serotonin /sɝəˈtoʊnɪn/
noun
-
A neurotransmitter involved in e.g. sleep and depression and memory
(
5-hydroxytryptamine
, serotonin
)
a neurotransmitter involved in e.g. sleep and depression and memory