/ Dictionary / Index C cladistics: Meaning and Definition of Find definitions for: cla•dis•tics Pronunciation: (klu-dis'tiks), [key] — n. Biol. (used with a pl. v.) classification of organisms based on the branchings of descendant lineages from a common ancestor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cladistics (Thesaurus) cladism clado- Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language