/ Dictionary / Index P polyether: Meaning and Definition of Find definitions for: pol•y•e•ther Pronunciation: (pol"ē-ē'thur) [key] — n. Chem. a polymeric ether. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyestrous polyethnic 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