/ Dictionary / Index H hydrology: Meaning and Definition of Find definitions for: hy•drol•o•gy Pronunciation: (hī-drol'u-jē), [key] — n. the science dealing with the occurrence, circulation, distribution, and properties of the waters of the earth and its atmosphere. hydrogeology; geohydrology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hydrology (Thesaurus) hydrologic cycle hydrolysate Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language