- (Received Pronunciation) IPA(key): /ˈnaɪtɹɒks/
- (General American) IPA(key): /ˈnaɪtɹɑks/
- Hyphenation: nitr‧ox
- (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.
mixture of nitrogen and oxygen used as a breathing gas