Adjective
hyperoxic (not comparable)
Of, pertaining to, or exhibiting hyperoxia.
hyperoxic (comparative more hyperoxic, superlative most hyperoxic)
Describing a breathing gas mixture that contains more than 21% oxygen.
Hyperoxic trimix The National Association of Underwater Instructors (NAUI) uses the term "helitrox" for hyperoxic 26/17 Trimix, i.e. 26% oxygen, 17% helium, 57% nitrogen. Source: Internet
This allows diving throughout the usual recreational range, while decreasing decompression obligation and narcotic effects compared to air. citation GUE and UTD also promote hyperoxic trimix, but prefer the term "TriOx". Source: Internet
Other divers question whether this proliferation of terminology is useful, and feel that the term Trimix is sufficient, modified as appropriate with the terms hypoxic, normoxic and hyperoxic, and the usual forms for indicating constituent gas fraction. Source: Internet