/ Dictionary / Index H hygrometer: Meaning and Definition of Find definitions for: hy•grom•e•ter Pronunciation: (hī-grom'i-tur), [key] — n. any instrument for measuring the water-vapor content of the atmosphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hygrometer (Thesaurus) hygrograph hygrometric Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language