clade

noun

: a group of biological taxa (such as species) that includes all descendants of one common ancestor

Examples of clade in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The mechanism has been invoked eight times in twenty years, for H1N1 (2009), polio (2014), Ebola in West Africa (2014), Zika (2016), Ebola in Kivu (2019), COVID-19 (2020), mpox (2022), and mpox again for clade I (2024). John Drake, Forbes.com, 19 May 2026 There are two strains, clade I and clade II but both are transmitted and treated in the same way, the CDC says. Staff Report, Hartford Courant, 14 May 2026 Mpox is an illness caused by the monkeypox virus, which comes in two strains called clades, the Mayo Clinic said. Don Sweeney, Sacbee.com, 21 Apr. 2026 One resident has tested positive for mpox clade I, one of the two main genetic groups (clades) of the mpox virus, which causes the illness. Melissa Rudy, FOXNews.com, 16 Mar. 2026 See All Example Sentences for clade

Word History

Etymology

borrowed from Greek kládos "branch, sprig, frond," after cladogenesis — more at clado-

Note: The term was introduced by Julian huxley in "The Three Types of Evolutionary Process," Nature, vol. 180, no. 4584 (September 7, 1957), p. 455.

First Known Use

1957, in the meaning defined above

Time Traveler
The first known use of clade was in 1957

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Cite this Entry

“Clade.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clade. Accessed 25 May. 2026.

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