/ Dictionary / Index A aneroid capsule: Meaning and Definition of Find definitions for: an'eroid cap"sule Pronunciation: [key] — Meteorol. Meteorol. a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aneroid barometer anes Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language