3 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: 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] From WordNet (r) 2.0 [wn]: epiphyses See {epiphysis} From WordNet (r) 2.0 [wn]: 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 [syn: {pineal gland}, {pineal body}, {epiphysis cerebri}] [also: {epiphyses} (pl)]
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