[ non-dis-juhngk-shuh n ]
/ ˌnɒn dɪsˈdʒʌŋk ʃən /
the failure of chromosomes to separate and segregate into daughter cells at division.
Can You Untangle These Regional Mix-Ups?Watch what you say while you're traveling around the US - not all words mean the same things in the same places.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for non-disjunction
Non-disjunction as proof of the chromosome theory of heredity.Sex-linked Inheritance in Drosophila|Thomas Hunt Morgan
British Dictionary definitions for non-disjunction
/ (ˌnɒndɪsˈdʒʌŋkʃən) /
the failure of paired homologous chromosomes to move to opposite poles of the cell during meiosis
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 non-disjunction
[ nŏn′dĭs-jŭngk′shən ]
The failure of one or more pairs of chromosomes to separate at the miotic stage of karyokinesis, with the result that both chromosomes are carried to one daughter cell and none to the other.
Related formsnon′dis•junc′tion•al adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.