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⇱ pineal gland - WordReference.com Dictionary of English

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pineal gland

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WordReference Random House Unabridged Dictionary of American English © 2026

pin′eal gland′,

Anatomya small, cone-shaped endocrine organ in the posterior forebrain, secreting melatonin and involved in biorhythms and gonadal development. Also called epiphysis. See diag. under brain.

1705–15

Collins Concise English Dictionary © HarperCollins Publishers::

pineal gland, pineal body n

a pea-sized organ in the brain, situated beneath the posterior part of the corpus callosum, that secretes melatonin into the bloodstreamTechnical names: epiphysis, epiphysis cerebri

'pineal gland' also found in these entries (note: many are not synonyms or translations):

epiphysis - pineal eye - third eye - epithalamus - habenula - melatonin - pineal apparatus - pineal body

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