[ ih-pif-uh-sis ]
/ ɪˈpɪf ə sɪs /

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.

Nearby words

  1. epiphysial aseptic necrosis,
  2. epiphysial cartilage,
  3. epiphysial line,
  4. epiphysial plate,
  5. epiphysiolysis,
  6. epiphysitis,
  7. epiphyte,
  8. epiphytotic,
  9. epipial,
  10. epiplo-

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

British Dictionary definitions for epiphyseal


/ (ɪˈpɪfɪsɪs) /

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

Medicine definitions for epiphyseal


[ ĭ-pĭfĭ-sĭs ]

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.