NITROX

Etymology

Noun

nitrox (uncountable)

(metallurgy) An industrial process for case hardening (imparting greater surface hardness to) metal objects, involving nitrocarburizing (the diffusion of carbon and nitrogen into the metal) followed by oxidation.

(underwater diving) A mixture of nitrogen and oxygen, the nitrogen content being lower than what is normally present in air, which is used in place of air as a breathing gas.

Coordinate terms

• (mixture of nitrogen and oxygen): heliair, heliox, trimix

Source: Wiktionary

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