The term anoxia means a total decrease in the level of oxygen, an extreme form of hypoxia or "low oxygen". The terms anoxia and hypoxia are used in various contexts:
- Anoxic waters
- Anoxic event
- Dead zone (ecology) or hypoxic zones
- Hypoxia (environmental)
- Hypoxia (medical)
See also
- Anoxia (beetle), a genus of scarab beetles
- Oxygen saturation, a relative measure of the oxygen dissolved or carried in a medium; a measure of the severity of hypoxic conditions.
- Oxygen toxicity (hyperoxia), the opposite condition of hypoxia, an excess of oxygen in body tissues.