heliair

== English == === Etymology === Blend of heli(um) +‎ air. === Pronunciation === (Received Pronunciation) IPA(key): /ˈhiː.liˌɛə/ (General American) IPA(key): /ˈhi.liˌɛɹ/ === Noun === heliair (uncountable) (underwater diving) A mixture of helium, nitrogen and oxygen, used as a breathing gas instead of normal air. ==== Coordinate terms ==== heliox nitrox trimix ==== Translations ====