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hyperbaric

[hahy-per-bar-ik] /ˌhaɪ pərˈbær ɪk/
adjective, Medicine/Medical
1.
(of an anesthetic) having a specific gravity greater than that of cerebrospinal fluid.
Compare hypobaric.
2.
pertaining to or utilizing gaseous pressure greater than normal, especially for administering oxygen in the treatment of certain diseases.
Origin of hyperbaric
1925-1930
1925-30; hyper- + baric2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for hyperbaric

hyperbaric

/ˌhaɪpəˈbærɪk/
adjective
1.
of, concerned with, or operating at pressures higher than normal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for hyperbaric
adj.

1930, from hyper- + Greek barys "heavy" (see grave (adj.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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hyperbaric in Medicine

hyperbaric hy·per·bar·ic (hī'pər-bār'ĭk)
adj.
Of, relating to, producing, operating, or occurring at pressures higher than normal atmospheric pressure.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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