/ Dictionary / Index H hydroperoxide: Meaning and Definition of Find definitions for: hy•dro•per•ox•ide Pronunciation: (hī"drō-pu-rok'sīd), [key] — n. any chemical compound having the general formula, ROOH, where R is an element or an organic group. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydropathy hydrophane Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language