Under-oxygenated

But there is also, on occasion, an under-oxygenated air of fantasy, a shimmering mirage of whitelessness and Asian self-sufficiency.

Most of us chronically recycle impure, under-oxygenated blood through our bodies day after day, year after year.

More generally, combustion in highly under-oxygenated environments of hydrocarbon molecules produces solid C and that of molecules containing halogen X atoms (with X = F, Cl, Br or I), produces HX compounds, or even COX2, when the medium is highly oxygenated.