Word.ws English Dictionary

melatonins

melatonins is the plural of melatonin.

Meaning of melatonin

Noun

melatonin (usually uncountable, plural melatonins)

  1. (usually) 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.2019, Bill Bryson, The Body: A Guide for Occupants, Black Swan (2020), page 310
  2. (usually) Any material similar in its chemistry and effect to the natural hormone.

Questions about melatonins

What is melatonins the plural of?
Melatonins is the plural of melatonin.

Words near melatonins in the dictionary

  1. melasyenite
  2. melatonergic
  3. melatonergics
  4. melatonin
  5. melatoninergic
  6. melatonins
  7. melatope
  8. melatopes
  9. melatroctolite
  10. melatroctolites
  11. Melava Malka

Source and license

Adapted from Wiktionary: melatonins (page history and authors); melatonin (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “melatonins.” Word.ws, https://word.ws/melatonins. Based on Wiktionary, CC BY-SA 4.0.