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[fee-nuh-tahyp] /ˈfi nəˌtaɪp/
noun, Genetics.
the observable constitution of an organism.
the appearance of an organism resulting from the interaction of the genotype and the environment.
Compare genotype.
Origin of phenotype
< German Phänotypus (1909); see pheno-, -type
Related forms
[fee-nuh-tip-ik] /ˌfi nəˈtɪp ɪk/ (Show IPA),
phenotypical, adjective
phenotypically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for phenotype
  • Two people with the same genetic variant can and do have different triggers that shape differential expressions as phenotype.
  • The kids sample yards across the state, collect plant phenotype data, and submit data to a common pool.
  • Variations in phenotype come potentially from the combined variations in genotype and in environment.
  • Thus, the evolution of this phenotype was contingent on the particular history of that population.
  • Not surprisingly the this individual will express an intermediate phenotype.
  • We're not claiming that we're the first to observe this phenotype.
  • Maybe it would help if there was a space for experts to discuss topics phenotype-blind and anonymous.
  • It is the proportion of phenotype variability that can be attributed to additive genetic variation.
  • There's a lot of evolutionary psychological models for why this phenotype is adaptive, but that's not relevant to us here.
  • Her father's ancestry in particular doesn't make sense in light of the phenotype she's attributing to him.
British Dictionary definitions for phenotype


the physical and biochemical characteristics of an organism as determined by the interaction of its genetic constitution and the environment Compare genotype
Derived Forms
phenotypic (ˌfiːnəʊˈtɪpɪk), phenotypical, adjective
phenotypically, 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 phenotype

"observable characteristics of an individual," 1911, from German phaenotypus (Wilhelm Johannsen, 1909); see pheno- + type (n.). Related: Phenotypic.

Online Etymology Dictionary, © 2010 Douglas Harper
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phenotype in Medicine

phenotype phe·no·type (fē'nə-tīp')

  1. The observable physical or biochemical characteristics of an organism, as determined by both genetic makeup and environmental influences.

  2. The expression of a specific trait, such as stature or blood type, based on genetic and environmental influences.

  3. An individual or group of organisms exhibiting a particular phenotype.

phe'no·typ'ic (-tĭp'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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phenotype in Science
The physical appearance of an organism as distinguished from its genetic makeup. The phenotype of an organism depends on which genes are dominant and on the interaction between genes and environment. Compare genotype.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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phenotype in Culture
phenotype [(fee-nuh-teyep)]

The outward appearance of an organism; the expression of a genotype in the form of traits that can be seen and measured, such as hair or eye color.

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