polyphyletic

polyphyletic

[pol-ee-fahy-let-ik]
adjective
developed from more than one ancestral type, as a group of animals.

Origin:
1870–75; poly- + phyletic

polyphyletically, adverb
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World English Dictionary
polyphyletic (ˌpɒlɪfaɪˈlɛtɪk)
 
adj
biology relating to or characterized by descent from more than one ancestral group of animals or plants
 
[C19: from poly- + phyletic]
 
polyphy'letically
 
adv

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American Heritage
Medical Dictionary

polyphyletic pol·y·phy·let·ic (pŏl'ē-fī-lět'ĭk)
adj.

  1. Descended or derived from more than one ancestral stock or source.

  2. Of or being the theory that blood cells are derived from several different stem cells, depending on the particular blood cell type.


pol'y·phy'le·tism (-fī'lĭ-tĭz'əm) n.
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American Heritage
Science Dictionary
polyphyletic  [%PREMIUM_LINK%]     (pŏl'ē-fī-lět'ĭk)  Pronunciation Key 
Relating to a taxonomic group that does not include the common ancestor of the members of the group and whose members have two or more separate origins. A group that consists of flying vertebrates would be polyphyletic, as bats and birds independently evolved flight and do not share a common ancestor. Compare monophyletic, paraphyletic.

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