Meaning Of The Word Melatonin

Real Dictionary

What's the definition of Melatonin? Find Melatonin meanings, definitions and more at the Real Dictionary online.

Melatonin Meaning

Melatonin Definition
Melatonin Definition

What's The Definition Of Melatonin?

melatonin in American English
a hormone, C13H16N2O2, produced by the pineal body, that lightens skin pigmentation, inhibits estrus, etc.: its secretion is inhibited by sunlight
noun: a hormone secreted by the pineal gland in inverse proportion to the amount of light received by the retina, important in the regulation of biorhythms: in amphibians, it causes a lightening of the skin

melatonin in British English
noun: the hormone-like secretion of the pineal gland, causing skin colour changes in some animals and thought to be involved in reproductive function

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