mac·​ro·​evo·​lu·​tion ˈma-krō-ˌe-və-ˈlü-shən How to pronounce macroevolution (audio)
 also  -ˌē-və-
: evolution that results in relatively large and complex changes (as in species formation)
macroevolutionary adjective

Example Sentences

Recent Examples on the Web Identifying species and the process by which new species emerge from fossils falls in the realm of macroevolution, or evolution over broad time scales. Briana Pobiner And Ryan Mcrae, Smithsonian Magazine, 28 Dec. 2021 These facts are every bit as solid and universally attested as climate change or macroevolution. Samuel James, National Review, 14 Feb. 2020 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, 2 June 2015

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

Word History


macro- + evolution, probably after French macroévolution

First Known Use

1937, in the meaning defined above

Time Traveler
The first known use of macroevolution was in 1937

Dictionary Entries Near macroevolution

Cite this Entry

“Macroevolution.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2022.

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