/ Dictionary / Index H hydrogenize: Meaning and Definition of Find definitions for: hy•dro•gen•ize Pronunciation: (hī'dru-ju-nīz", hī-droj'u-), [key] — -ized, -iz•ing. hydrogenate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrogen ion hydrogenolysis Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language