/ Dictionary / Index A air chamber: Meaning and Definition of Find definitions for: air' cham"ber Pronunciation: [key] a chamber containing air, as in a pump, lifeboat, or organic body. Also calleda compartment of a hydraulic system containing air that by its elasticity equalizes the pressure and flow of liquid within the system. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. air cell air chief marshal Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language