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epiphysis

[ih-pif-uh-sis]
noun, plural e·piph·y·ses [ih-pif-uh-seez] /ɪˈpɪf əˌsiz/. Anatomy.
  1. a part or process of a bone separated from the main body of the bone by a layer of cartilage and subsequently uniting with the bone through further ossification.
  2. pineal gland.
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Origin of epiphysis

1625–35; < New Latin < Greek epíphysis a growth upon, equivalent to epi- epi- + phýsis growth (phȳ́(ein) to make grow, bring forth, produce + -sis -sis)
Related formsep·i·phys·e·al [ep-uh-fiz-ee-uh l, ih-pif-uh-see-uh l, -zee-] /ˌɛp əˈfɪz i əl, ɪˌpɪf əˈsi əl, -ˈzi-/, ep·i·phys·i·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for epiphysis

epiphysis

noun plural -ses (-ˌsiːz)
  1. the end of a long bone, initially separated from the shaft (diaphysis) by a section of cartilage that eventually ossifies so that the two portions fuse together
  2. Also called: epiphysis cerebri (ˈsɛrɪˌbraɪ) the technical name for pineal gland
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Derived Formsepiphyseal or epiphysial (ˌɛpɪˈfɪzɪəl), adjective

Word Origin

C17: via New Latin from Greek: a growth upon, from epi- + phusis growth, from phuein to bring forth, produce
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

epiphysis in Medicine

epiphysis

(ĭ-pĭfĭ-sĭs)
n. pl. e•piph•y•ses (-sēz′)
  1. The end of a long bone that is originally separated from the main bone by a layer of cartilage but that later becomes united to the main bone through ossification.
  2. pineal body
Related formsep′i•physi•al (ĕp′ə-fĭzē-əl) null adj.