/ Dictionary / Index P phyletic: Meaning and Definition of Find definitions for: phy•let•ic Pronunciation: (fī-let'ik), [key] — adj. Biol. of, pertaining to, or based on the evolutionary history of a group of organisms; phylogenetic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: phyletic (Thesaurus) phyle phyletic classification Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language