ge·​no·​type | \ ˈjē-nə-ˌtīp How to pronounce genotype (audio) , ˈje- How to pronounce genotype (audio) \

Definition of genotype

 (Entry 1 of 2)

1 [ISV gen-] : type species
2 [ISV gene] : all or part of the genetic constitution of an individual or group — compare phenotype entry 1 sense 1


genotyped; genotyping; genotypes

Definition of genotype (Entry 2 of 2)

transitive verb

: to determine all or part of the genetic constitution of Because many Icelanders have now been genotyped, meaning their DNA has been analyzed at many sites spaced across the genome, the Decode researchers were able to pick a set of 40 sites where the DNA variations were diagnostic of geographic origin.— Nicholas Wade Genotyping of multiple B. pseudomallei colonies from several tissue sites from four patients … showed substantial genetic diversity within a single patient …— W. Joost Wiersinga

Other Words from genotype


genotypic \ ˌjē-​nə-​ˈti-​pik How to pronounce genotype (audio) , ˌje-​ \ or less commonly genotypical \ ˌjē-​nə-​ˈti-​pi-​kəl How to pronounce genotype (audio) , ˌje-​ \ adjective
genotypic analysis
genotypically \ ˌjē-​nə-​ˈti-​pi-​k(ə-​)lē How to pronounce genotype (audio) , ˌje-​ \ adverb
genotypically similar strains


genotyping noun

Examples of genotype in a Sentence

Recent Examples on the Web: Noun The fourth vaccine, EV71vac, is based on the B4 genotype and included participants as young as two months old in the phase 2 clinical trial. William A. Haseltine, Forbes, 20 June 2022 Natural selection favors the variants on peaks: The average genotype or phenotype of a species should evolve by moving from one peak to the next, ideally along a ridge between them rather than through the valleys. Quanta Magazine, 11 Jan. 2022 To Tobias Warnecke, a molecular evolutionary biologist at Imperial College London, fitness landscapes are an invaluable way to connect genotype to phenotype. Quanta Magazine, 11 Jan. 2022 In fact, one of the studies that is almost always cited when justifying the CYP1A2 gene’s impact on caffeine metabolism only found an influence of genotype among people who smoke, while failing to find any such effects among non-smokers. Patrick Wilson, Outside Online, 15 June 2020 The science of cancer research has already received a boost from examining genotype and phenotype changes simultaneously, in areas ranging from solid tumors to acute myeloid leukemia (AML). Yan Zhang, Forbes, 22 Oct. 2021 Meanwhile, scientists are working rapidly to learn more about plants’ genes, or their genotype, and match these genetic traits with the plants’ physical traits, or their phenotype. Elizabeth Gamillo, Smithsonian Magazine, 11 Sep. 2021 That was the case for 97 of the 180 people with the low-carb genotype. Sharon Begley, Scientific American, 21 Feb. 2018 In particular, a person’s phenotype, how someone physically presents, may not hold meaningful clues for their genotype, someone’s genetic make-up. Ashley Andreou, Scientific American, 7 June 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'genotype.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of genotype


1897, in the meaning defined at sense 1


1946, in the meaning defined above

Learn More About genotype

Time Traveler for genotype

Time Traveler

The first known use of genotype was in 1897

See more words from the same year

Dictionary Entries Near genotype




See More Nearby Entries 

Statistics for genotype

Last Updated

27 Jun 2022

Cite this Entry

“Genotype.” Dictionary, Merriam-Webster, Accessed 7 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for genotype


ge·​no·​type | \ ˈjē-nə-ˌtīp How to pronounce genotype (audio) , ˈjen-ə- How to pronounce genotype (audio) \

Medical Definition of genotype

 (Entry 1 of 2)

2 : all or part of the genetic constitution of an individual or group — compare phenotype

Other Words from genotype

genotypic \ ˌjē-​nə-​ˈtip-​ik How to pronounce genotype (audio) , ˌjen-​ə-​ How to pronounce genotype (audio) \ also genotypical \ -​i-​kəl How to pronounce genotype (audio) \ adjective
genotypically \ -​i-​k(ə-​)lē How to pronounce genotype (audio) \ adverb


transitive verb
genotyped; genotyping

Medical Definition of genotype (Entry 2 of 2)

: to determine the genotype of DNA samples from the participants were genotyped for two common single-nucleotide polymorphisms (SNPs) in the coding region of the vitamin D–binding protein gene …— Camille E. Powe et al., The New England Journal of Medicine

More from Merriam-Webster on genotype

Nglish: Translation of genotype for Spanish Speakers Encyclopedia article about genotype


Test Your Vocabulary

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
Spell It

Can you spell these 10 commonly misspelled words?

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!