/ Dictionary / Index P polyethnic: Meaning and Definition of Find definitions for: pol•y•eth•nic Pronunciation: (pol"ē-eth'nik), [key] — adj. inhabited by or consisting of people of many ethnic backgrounds. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyether polyethylene Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language