(n) a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin, Syn.epiphysis, pineal body, epiphysis cerebri
a. [ L. pinea the cone of a pine, from pineus of the pine, from pinus a pine: cf. F. pinéale. ] Of or pertaining to a pine cone; resembling a pine cone. [ 1913 Webster ]
Pineal gland (Anat.), a glandlike body in the roof of the third ventricle of the vertebrate brain; -- called also pineal body, epiphysis, conarium. In some animals it is connected with a rudimentary eye, the so-called pineal eye, and in other animals it is supposed to be the remnant of a dorsal median eye. [ 1913 Webster ]
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