noun, plural e·piph·y·ses [ih-pif-uh-seez] /ɪˈpɪf əˌsiz/. Anatomy.

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.

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. 2019

Examples from the Web for epiphyseal

Historical Examples of epiphyseal

  • They also appear frequently to arise from the epiphyseal line.

  • The nose of the bullet is at the epiphyseal line, which is shown in the femur.

  • Here the blood may extend for a considerable distance along the shaft, but rarely beyond the epiphyseal line.

    Scurvy Past and Present

    Alfred Fabian Hess

  • It is to these epiphyseal separations that the term fracture or infraction usually refers.

    Scurvy Past and Present

    Alfred Fabian Hess

  • Holt reports a case where a child bled to death following incision into an epiphyseal swelling at the lower end of the femur.

    Scurvy Past and Present

    Alfred Fabian Hess

British Dictionary definitions for epiphyseal


noun plural -ses (-ˌsiːz)

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
Also called: epiphysis cerebri (ˈsɛrɪˌbraɪ) the technical name for pineal gland
Derived Formsepiphyseal or epiphysial (ˌɛpɪˈfɪzɪəl), adjective

Word Origin for epiphysis

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

epiphyseal in Medicine



n. pl. e•piph•y•ses (-sēz′)

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.
pineal body
Related formsep′i•physi•al (ĕp′ə-fĭzē-əl) null adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.