/ Dictionary / Index A aerometer: Meaning and Definition of Find definitions for: aer•om•e•ter Pronunciation: (â-rom'i-tur), [key] — n. an instrument for determining the weight, density, etc., of air or other gases. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aerometeorograph aeron. Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language