/ Dictionary / Index H hydrofracturing: Meaning and Definition of Find definitions for: hy•dro•frac•tur•ing Pronunciation: (hī"dru-frak'chu-ring), [key] — n. a method of increasing the permeability of rocks penetrated by an oil or gas well by pumping in water and sand under pressure to open up cracks in the rocks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hydroformylation hydrogel Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language