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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - Hormone secreted by the pineal gland.

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Usage examples (39)
  • For the record, melatonin is a hormone, and it's not a regulated drug under the FDA.
  • This article on sleep and melatonin is also available at Dr. Breus's official blog, The Insomnia Blog.
  • Your body actually produces a hormone known as melatonin, and this is a hormone that seems to be produced mainly at night.
  • During the sleep cycle, your body releases a hormone called melatonin, which has positive effects on your skin and your immune system.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.