cladistics(n = noun.cognition) cladistic analysis - a system of biological taxonomy based on the quantitative analysis of comparative data and used to reconstruct cladograms summarizing the (assumed) phylogenetic relations and evolutionary history of groups of organisms;
cladistics, n.pl. (usu. treated as sing.) Biol. a method of classification of animals and plants on the basis of shared characteristics, which are assumed to indicate common ancestry.