HYPOXIA

n. lack of oxygen in the blood (Medicine)

Hypoxia literally means "deficient in oxygen." It can refer to:Hypoxia (medical), a shortage of oxygen in the body. Hypoxaemia is the reduction of oxygen specifically in the blood; anoxia is when there is no oxygen available at all.Environmental hypoxia, a condition in high altitudes such as mountains where the reduced partial pressure of oxygen available leads to hypoxia.Ischemia, a restriction in blood supply (and therefore oxygen supply) to an organ or section of the body, generally due to constriction or blocking of blood vessels.Hypoxia (environmental) or oxygen depletion, a reduced concentration of dissolved oxygen in a water body leading to stress and death in aquatic organisms.Dead zone (ecology), or hypoxic zones, hypoxic areas in the world's oceans.Anoxic sea water, a condition of abnormally low levels of oxygen in the sea.Oxygen minimum zone, the depth in the sea at which the dissolved oxygen level is lowest, or most hypoxic.Hypoxia, a song on the album Spheres 2 by Delerium
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Hypoxia /hy·pox·ia/ reduction of oxygen supply to a tissue below physiological levels despite adequate perfusion of the tissue by blood. [more]Hypoxia - Community and Resources

Noun
1. a very strong drive resulting from a deficiency of available oxygen in the blood and bodily tissues (short of anoxia)
(hypernym) drive
(hyponym) anemic hypoxia
(part-holonym) asphyxia

Concentration of oxygen in arterial blood that is less than normal. Anoxia refers to complete lack of oxygen.