/ Dictionary / Index P polyonymous: Meaning and Definition of Find definitions for: pol•y•on•y•mous Pronunciation: (pol"ē-on'u-mus), [key] — adj. having or known by several or many names. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyoma virus polyp Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language