- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
accounting firm
-
biota
-
mobility
-
typo
-
pigeon-breasted
-
bawd
-
strenuous
-
emerging
-
order anguilliformes
-
hurricane
- 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