melatonin

(redirected from N-acetyl-5-methoxtryptamine)
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mel·a·to·nin

 (mĕl′ə-tō′nĭn)
n.
An animal hormone, C13H16N2O2, derived from serotonin and produced by the pineal gland. It stimulates color change in the skin of amphibians and reptiles and plays a role in regulating circadian rhythms and reproductive cycles in mammals. It is also found in plants and fungi.

[Greek melās, black + ton(e) + -in.]

melatonin

(ˌmɛləˈtəʊnɪn)
n
(Biochemistry) the hormone-like secretion of the pineal gland, causing skin colour changes in some animals and thought to be involved in reproductive function
[C20: probably from mela(nocyte) + (sero)tonin]

mel•a•to•nin

(ˌmɛl əˈtoʊ nɪn)

n.
a hormone secreted by the pineal gland in inverse proportion to the amount of light received by the retina, important in regulating biorhythms.
[1955–60; < Greek mélā(s) black + tone + -in1]

melatonin

A hormone influencing the onset of puberty, the menstrual cycle, and the body’s daily activity cycle. See also pineal gland.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.melatonin - hormone secreted by the pineal gland
endocrine, hormone, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
Translations

melatonin

n melatonina
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