mi·​cro·​evo·​lu·​tion | \ ˌmī-krō-ˌe-və-ˈlü-shən How to pronounce microevolution (audio) also -ˌē-və- \

Definition of microevolution

: comparatively minor evolutionary change involving the accumulation of variations in populations usually below the species level

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Other Words from microevolution

microevolutionary \ ˌmī-​krō-​ˌe-​və-​ˈlü-​shə-​ˌner-​ē How to pronounce microevolutionary (audio) also  -​ˌē-​və-​ \ adjective

Examples of microevolution in a Sentence

Recent Examples on the Web Some of these teachers might even introduce evolutionary ideas such as natural selection and microevolution. Olga Khazan, The Atlantic, "Why Some Public-School Kids Don’t Learn About Evolution," 19 Sep. 2019 Rather, Abzhanov showed that the same forces that shape microevolution — minor alterations within species — also drive macroevolution, the evolution of whole new features and new groups of species. Quanta Magazine, "How Dinosaurs Shrank and Became Birds," 2 June 2015 To get samples from other species, Dr. Carlton has enlisted the aid of a Fordham University biologist, Jason Munshi-South, who studies the travel patterns and microevolution of rodents in the city. Andy Newman, New York Times, "Dogs Do Their Duty for Science," 7 Apr. 2017

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

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First Known Use of microevolution

1911, in the meaning defined above

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Time Traveler for microevolution

Time Traveler

The first known use of microevolution was in 1911

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Statistics for microevolution

Cite this Entry

“Microevolution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microevolution. Accessed 29 Oct. 2020.

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More Definitions for microevolution


mi·​cro·​evo·​lu·​tion | \ ˈmī-krō-ˌev-ə-ˈlü-shən also -ˌē-və- \

Medical Definition of microevolution

: comparatively minor evolutionary change involving the accumulation of variations in populations usually below the species level

Other Words from microevolution

microevolutionary \ -​shə-​ˌner-​ē How to pronounce microevolutionary (audio) \ adjective

More from Merriam-Webster on microevolution

Britannica.com: Encyclopedia article about microevolution

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