/ Dictionary / Index H hydrocracker: Meaning and Definition of Find definitions for: hy•dro•crack•er Pronunciation: (hī'dru-krak"ur), [key] — n. a high-pressure processing unit used for hydrocracking. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydrocortisone hydrocracking Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language