/ Dictionary / Index H hyetography: Meaning and Definition of Find definitions for: hy•e•tog•ra•phy Pronunciation: (hī"i-tog'ru-fē), [key] — n. the study of the annual and geographical distribution of rainfall. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyetograph hyetology 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