/ Dictionary / Index B barometer: Meaning and Definition of Find definitions for: ba•rom•e•ter Pronunciation: (bu-rom'i-tur), [key] — n. any instrument that measures atmospheric pressure. Cf. aneroid barometer, mercury barometer. anything that indicates changes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: barometer (Thesaurus) Barolo barometric error Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language