melatonin

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English[edit]

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Pronunciation[edit]

  • IPA(key): /ˌmɛləˈtoʊnɪn/

Etymology[edit]

Blend of melanin +‎ serotonin.

Noun[edit]

melatonin ‎(usually uncountable, plural melatonins)

  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/wake and reproductive cycles in mammals
  2. Any material similar in its chemistry and effect to the natural hormone.

Translations[edit]