ENGLISH DICTIONARY

Melatonin

Definition, Meaning & Examples

Pronunciation /ˌmɛləˈtəʊnɪn/ · Part of speech noun

Quick meaning: Melatonin is a noun meaning Any material similar in its chemistry and effect to the natural hormone.

Meaning

Any material similar in its chemistry and effect to the natural hormone.

More Meanings

  1. 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.

Example Sentences

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.

Word Forms

Related Words

Related dictionary entries include neurohormone, intermedin, normelatonin, afamelanotide, tasimelteon, melatonergic.

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Sources & Attribution

FreeDictionaryAPI.com / Wiktionary · Original source · CC BY-SA 4.0

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