/ Dictionary / Index H hygrogram: Meaning and Definition of Find definitions for: hy•gro•gram Pronunciation: (hī'gru-gram"), [key] — n. the record made by a hygrograph. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hygro- hygrograph Related Content Daily Word Quiz: supercilious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language