/ Dictionary / Index C clade: Meaning and Definition of Find definitions for: clade Pronunciation: (klād), [key] — n. Biol. a taxonomic group of organisms classified together on the basis of homologous features traced to a common ancestor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: clade (Thesaurus) cladding cladism Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language