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Definition of Pineal body
1. Noun. A small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin.
Exact synonyms: Epiphysis, Epiphysis Cerebri, Pineal Gland
Generic synonyms: Ductless Gland, Endocrine, Endocrine Gland
Generic synonyms: Ductless Gland, Endocrine, Endocrine Gland
Medical Definition of Pineal body
1. A small conical midline body attached to the posterior part of the third ventricle and lying between the superior colliculi, below the splenium of the corpus callosum. (12 Dec 1998)