polyphyletic

adjective

poly·​phy·​let·​ic ˌpä-lē-(ˌ)fī-ˈle-tik How to pronounce polyphyletic (audio)
: of, relating to, or derived from more than one ancestral stock
specifically : relating to or being a taxonomic group that includes members (such as genera or species) from different ancestral lineages
polyphyletically adverb

Word History

Etymology

International Scientific Vocabulary, from Greek polyphylos of many tribes, from poly- + phylē tribe — more at phyl-

First Known Use

1875, in the meaning defined above

Time Traveler
The first known use of polyphyletic was in 1875

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Cite this Entry

“Polyphyletic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyphyletic. Accessed 4 Feb. 2026.

Medical Definition

polyphyletic

adjective
poly·​phy·​let·​ic ˌpäl-i-(ˌ)fī-ˈlet-ik How to pronounce polyphyletic (audio)
: of or relating to more than one stock
specifically : derived from more than one ancestral line
polyphyletically adverb
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