/ Dictionary / Index H hyperbaric chamber: Meaning and Definition of Find definitions for: hy'perbar'ic cham'ber Pronunciation: [key] a steel vessel in which atmospheric pressure can be raised or lowered by air compressors, used to treat divers or pilots afflicted with aeroembolism and to provide high-oxygen environments for certain medical treatments and operations. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hyperbaric hyperbaton Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language