Pronunciation: (hī"pur-bar'ik), [key]
1. (of an anesthetic) having a specific gravity greater than that of cerebrospinal fluid. Cf. hypobaric.
2. pertaining to or utilizing gaseous pressure greater than normal, esp. for administering oxygen in the treatment of certain diseases.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.