heterozygous

[ het-er-uh-zahy-guh s ]
/ ˌhɛt ər əˈzaɪ gəs /

adjective Biology.

having dissimilar pairs of genes for any hereditary characteristic.
of or relating to a heterozygote.
Also het·er·o·zy·got·ic [het-uh-roh-zahy-got-ik] /ˌhɛt ə roʊ zaɪˈgɒt ɪk/.

Origin of heterozygous

1900–05; hetero- + Greek zygós, adj. derivative of zygón yolk; see -ous

Related forms

het·er·o·zy·gos·i·ty [het-uh-roh-zahy-gos-i-tee] /ˌhɛt ə roʊ zaɪˈgɒs ɪ ti/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for heterozygous

British Dictionary definitions for heterozygous

heterozygous

/ (ˌhɛtərəʊˈzaɪɡəs) /

adjective

genetics (of an organism) having different alleles for any one geneheterozygous for eye colour Compare homozygous
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 heterozygous

heterozygous

[ hĕt′ər-ə-zīgəs ]

adj.

Having different alleles at one or more corresponding chromosomal loci.
Of or relating to a heterozygote.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for heterozygous

heterozygous

[ hĕt′ər-ə-zīgəs ]

Relating to a cell that has two different alleles at corresponding positions on homologous chromosomes. Compare homozygous.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.