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[hoh-muh-zahy-guh s, hom-uh-] /ˌhoʊ məˈzaɪ gəs, ˌhɒm ə-/
adjective, Biology
having identical pairs of genes for any given pair of hereditary characteristics.
of or relating to a homozygote.
Also, homozygotic
[hoh-moh-zahy-got-ik, hom-oh-] /ˌhoʊ moʊ zaɪˈgɒt ɪk, ˌhɒm oʊ-/ (Show IPA)
Origin of homozygous
1900-05; homo- + Greek -zygos; see zygo-, -ous
Related forms
[hoh-moh-zahy-gos-i-tee, -zi-, hom-oh-] /ˌhoʊ moʊ zaɪˈgɒs ɪ ti, -zɪ-, ˌhɒm oʊ-/ (Show IPA),
noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for homozygous


/ˌhəʊməʊˈzaɪɡəs; -ˈzɪɡ-; ˌhɒm-/
(genetics) (of an organism) having identical alleles for any one gene: these two fruit flies are homozygous for red eye colour Compare heterozygous
Derived Forms
homozygously, adverb
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
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Word Origin and History for homozygous

1902, from homo- (1) "same" + zygote + -ous. Related: homozygote.

Online Etymology Dictionary, © 2010 Douglas Harper
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homozygous in Medicine

homozygous ho·mo·zy·gous (hō'mō-zī'gəs, -mə-, hŏm'ə-)
Having the same alleles at a one or more gene loci on homologous chromosome segments.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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homozygous in Science
Relating to a cell that has two identical alleles for a particular trait at corresponding positions on homologous chromosomes. Compare heterozygous.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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