The term anoxia means a total depletion in the level of
oxygen, an extreme form of hypoxia or "low oxygen". The terms anoxia and hypoxia are used in various contexts:
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Anoxic waters, sea water, fresh water or groundwater that are depleted of dissolved oxygen
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Anoxic event, when the Earth's oceans become completely depleted of oxygen below the surface levels
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Euxinic, anoxic conditions in the presence of hydrogen sulfide
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Hypoxia (environmental)
Hypoxia refers to low oxygen conditions. Normally, 20.9% of the gas in the atmosphere is oxygen. The partial pressure of oxygen in the atmosphere is 20.9% of the total barometric pressure. In water, oxygen levels are much lower, approximately 7 p ...
, low oxygen conditions
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Hypoxia (medical)
Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level. Hypoxia may be classified as either '' generalized'', affecting the whole body, or ''local'', affecting a region of the bo ...
, when the body or a region of the body is deprived of adequate oxygen supply
** Cerebral anoxia, when the brain is completely deprived of oxygen, an extreme form of
cerebral hypoxia
See also
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''Anoxia'' (beetle), a genus of
scarab beetles
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Oxygen saturation, a relative measure of the oxygen dissolved or carried in a medium; a measure of the severity of hypoxic conditions
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Oxygen toxicity (hyperoxia), the opposite condition of hypoxia, an excess of oxygen in body tissues
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Oxygen-free (disambiguation) Oxygen-free may refer to the absence of oxygen in an environment or in a material.
Not to be confused with ''free oxygen'', oxygen in the atmosphere of Earth that is not combined with other elements and may be breathed by living beings.
Environm ...
{{disambiguation