/ Dictionary / Index P perhydrogenate: Meaning and Definition of Find definitions for: per•hy•dro•gen•ate Pronunciation: (pur-hī'dru-ju-nāt", pûr"hī-droj'u-), [key] — -at•ed, -at•ing. to hydrogenate as completely as possible. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perhaps perhydrogenize Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language