Dictionary

cladistics

noun plural but singular in construction cla·dis·tics \klə-ˈdis-tiks, kla-\

Definition of CLADISTICS

:  a system of biological taxonomy that defines taxa uniquely by shared characteristics not found in ancestral groups and uses inferred evolutionary relationships to arrange taxa in a branching hierarchy such that all members of a given taxon have the same ancestors
cla·dist \ˈkla-dist, ˈklā-\ noun
cla·dis·tic \klə-ˈdis-tik, kla-\ adjective
cla·dis·ti·cal·ly \-ti-k(ə-)lē\ adverb

First Known Use of CLADISTICS

1965

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