'Polyphyletic' definitions:

Definition of 'Polyphyletic'

From: GCIDE

Polyphyletic \Pol`y*phy*let"ic\, a. [Poly- + Gr. ? clan.] (Biol.) Pertaining to, or characterized by, descent from more than one root form, or from many different root forms; polygenetic; -- opposed to monophyletic. [1913 Webster]