/ Dictionary / Index P polygenesis: Meaning and Definition of Find definitions for: pol•y•gen•e•sis Pronunciation: (pol"ē-jen'u-sis), [key] — n. Biol., Anthropol. origin from more than one ancestral species or line. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polygene polygenetic Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language