natural selection

noun

: a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads to the perpetuation of genetic qualities best suited to that particular environment

Examples of natural selection in a Sentence

Recent Examples on the Web
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Still, the fact that natural selection favored a psychology that drives voluntary deference and powerful leaders suggests that, most of the time, prestige hierarchies are worth the risks. Thomas Morgan, The Conversation, 3 Feb. 2026 The first is that our love of music, and dance along with it, is just a happy accident of natural selection – tapping into our evolution to evoke delight. Luis Melecio-Zambrano, Mercury News, 31 Jan. 2026 If a design works, natural selection won’t try to fix what clearly isn’t broken. Scott Travers, Forbes.com, 7 Jan. 2026 They were invented only about five thousand years ago, and natural selection has not configured the brain to facilitate them. David Owen, New Yorker, 22 Dec. 2025 See All Example Sentences for natural selection

Word History

First Known Use

1842, in the meaning defined above

Time Traveler
The first known use of natural selection was in 1842

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Cite this Entry

“Natural selection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/natural%20selection. Accessed 15 Feb. 2026.

Kids Definition

natural selection

noun
: a natural process in which individuals or groups best adapted to the conditions under which they live survive and produce young and poorly adapted forms are eliminated

Medical Definition

natural selection

noun
: a natural process that results in the survival and reproductive success of individuals or groups best adjusted to their environment and that leads to the perpetuation of genetic qualities best suited to that particular environment

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