adjective \ˌpä-lē-(ˌ)fī-ˈle-tik\

Definition of POLYPHYLETIC

:  of, relating to, or derived from different ancestral stocks; specifically :  relating to or being a taxonomic group that includes members (as genera or species) from different ancestral lineages
poly·phy·let·i·cal·ly \-ti-k(ə-)lē\ adverb


International Scientific Vocabulary, from Greek polyphylos of many tribes, from poly- + phylē tribe — more at phyl-
First Known Use: 1875


adjective \ˌpäl-i-(ˌ)fī-ˈlet-ik\   (Medical Dictionary)

Medical Definition of POLYPHYLETIC

: of or relating to more than one stock; specifically : derived from more than one ancestral line
poly·phy·let·i·cal·ly \-i-k(ə-)lē\ adverb


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