- The definition of polyphyletic is a group of organisms that are classified into the same group but came from different ancestors.
An example of polyphyletic is grouping warm-blooded animals together.
Biol. derived from more than one ancestral type
Origin of polyphyleticpoly- + phyletic
- Of or relating to a group of taxa that does not include the common ancestor of all the members.
- Of or derived from more than one stock or source.
(comparative more polyphyletic, superlative most polyphyletic)