nitrox

ni·trox

 (nī′trŏks′)

n.

Air that has a higher percentage of oxygen than atmospheric air, sometimes used in scuba diving to reduce the risk of decompression sickness and to allow for dives that are longer than normal. Also called enriched air.

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[nitr(ogen) + ox(ygen).]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

nitrox

(ˈnaɪtrɒks)

n

a mixture of nitrogen and oxygen used by divers

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014