/ Dictionary / Index P polyhydroxy: Meaning and Definition of Find definitions for: pol•y•hy•drox•y Pronunciation: (pol"ē-hī-drok'sē), [key] — adj. Chem. containing two or more hydroxyl groups. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. polyhydric Polyhymnia Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language