melatonin
Collocations
3ADJ.
pineal
MELATONIN + NOUN
production
ADV.
exactly
Definitions
noun
A hormone, related to serotonin, that is secreted by the pineal gland, and stimulates colour change in the skin of reptiles, and is involved in the sleep and wake and reproductive cycles in mammals.
How exactly melatonin relates to sleep is still not understood.
Melatonin production can be delayed or arrested by even brief flashes of bright light entering the eye, research has shown.
Any material similar in its chemistry and effect to the natural hormone.
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Idioms & Phrases
Example Bank
4How exactly melatonin relates to sleep is still not understood.
WiktionaryMelatonin production can be delayed or arrested by even brief flashes of bright light entering the eye, research has shown.
WiktionaryThe pineal gland secretes melatonin.
Tatoeba · #6218806Melatonin helps to regulate circadian rhythms.
Tatoeba · #12858900