[ het-er-uh-zahy-goht, -zig-oht ]

  1. a person, animal, or other organism with a pair of differing alleles, one dominant and one recessive, of a particular gene.

Origin of heterozygote

First recorded in 1900–05; hetero- + zygote

Words Nearby heterozygote

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use heterozygote in a sentence

  • The heterozygote produced by crossing these forms is intermediate in size and appearance.

    Mendelism | Reginald Crundall Punnett
  • heterozygote (different yolk), a zygotic individual which contains both members of an allelomorphic pair.

    Applied Eugenics | Paul Popenoe and Roswell Hill Johnson
  • If the individual was really a heterozygote, approximately fifty per cent.

    Being Well-Born | Michael F. Guyer
  • Eosin is allelomorphic to white and the white-eosin compound or heterozygote has the color of the eosin male.

  • In this character, then, dominance almost always fails to show itself in the heterozygote and often fails in pure dominants.

British Dictionary definitions for heterozygote


/ (ˌhɛtərəʊˈzaɪɡəʊt, -ˈzɪɡəʊt) /

  1. an animal or plant that is heterozygous; a hybrid: Compare homozygote

Derived forms of heterozygote

  • heterozygosis, noun

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