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epiphysis 骺; 骨端; 骨骺 □; 骨端; 骨□ epiphysis n 1: the end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused 2: a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin [synonym: {pineal gland}, {pineal body}, {epiphysis cerebri}, {epiphysis}] Pineal \Pi"ne*al\, a. [L. pinea the cone of a pine, from pineus
of the pine, from pinus a pine: cf. F. pin['e]ale.] 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] Epiphysis \E*piph"y*sis\, n.; pl. {Epiphyses}. [NL., fr. Gr. 'epi`fysis, fr. 'epify`ein to grow upon; 'epi` upon fy`ein to grow.] (Anat.) (a) The end, or other superficial part, of a bone, which ossifies separately from the central portion, or {diaphysis}. (b) The cerebral epiphysis, or pineal gland. See {Pineal gland}, under {Pineal}. [1913 Webster]
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