/ Dictionary / Index H hyetology: Meaning and Definition of Find definitions for: hy•e•tol•o•gy Pronunciation: (hī"i-tol'u-jē), [key] — n. the branch of meteorology dealing with precipitation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyetography Hygieia Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language