a combining form meaning “nucleus of a cell,” used in the formation of compound words: karyotin.

Nearby words

  1. karuhiruhi,
  2. karun,
  3. karuna,
  4. karviná,
  5. karyn,
  6. karyocyte,
  7. karyogamy,
  8. karyogenesis,
  9. karyogram,
  10. karyokinesis

Also caryo-.

Origin of karyo-

< Greek, combining form of káryon nut, kernel

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for karyo-



combining form

indicating the nucleus of a cellkaryogamy

Word Origin for karyo-

from New Latin, from Greek karuon kernel, nut

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

Word Origin and History for karyo-


before vowels kary-, word-forming element used since c.1874 in biological terms referring to cell nuclei, from Greek karyon "nut, kernel," possibly from PIE root *kar- "hard" (see hard (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for karyo-



Cell nucleus:karyogamy.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.