Dictionary
hy'perbar'ic cham'ber
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
recompression chamber, decompression chamber. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.