• synonyms


[jen-uh-tahyp, jee-nuh-]
noun Genetics.
  1. the genetic makeup of an organism or group of organisms with reference to a single trait, set of traits, or an entire complex of traits.
  2. the sum total of genes transmitted from parent to offspring.
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Compare phenotype.

Origin of genotype

< German Genotypus (1909); see gene, -o-, -type
Related formsgen·o·typ·ic [jen-uh-tip-ik, jee-nuh-] /ˌdʒɛn əˈtɪp ɪk, ˌdʒi nə-/, gen·o·typ·i·cal, adjectivegen·o·typ·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for genotype

Historical Examples

  • Corresponding closely in general characters with S. macroceros (Grube), the genotype.

    Journal of Entomology and Zoology, Vol. 11. No. 1.


  • The branchi, as in the genotype and other species, strongly asymmetrically developed.

  • My impression is that Allen's trinitatis, of Trinidad, the genotype of Proechimys, will eventually be split.

British Dictionary definitions for genotype


  1. the genetic constitution of an organism
  2. a group of organisms with the same genetic constitution
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Derived Formsgenotypic (ˌdʒɛnəʊˈtɪpɪk) or genotypical, adjectivegenotypically, adverbgenotypicity (ˌdʒɛnəʊtɪˈpɪsɪtɪ), 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

Word Origin and History for genotype


"genetic constitution of an individual," 1910, from German Genotypus (Wilhelm Johannsen, 1909); see gene + type. Earlier the same word was used with a sense of "type species of a genus" (1897); in this case, the first element is from genus.

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Online Etymology Dictionary, © 2010 Douglas Harper

genotype in Medicine


(jĕnə-tīp′, jēnə-)
  1. The genetic constitution of an organism or a group of organisms.
  2. A group or class of organisms having the same genetic constitution.
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Related formsgen′o•typi•cal (-tĭpĭ-kəl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

genotype in Science


[jĕnə-tīp′, jēnə-tīp′]
  1. The genetic makeup of an organism as distinguished from its physical characteristics. Compare phenotype.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

genotype in Culture


A combination of alleles situated on corresponding chromosomes that determines a specific trait.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.