Definition - What does Anaerobic mean?

Anaerobic refers to a type of environment that consists of a partial or complete lack of oxygen. It may also refer to a type of corrosion that occurs in the presence of anoxic water.

Corrosionpedia explains Anaerobic

Anaerobic corrosion is most readily observed when a metal is placed or used in an environment with a high concentration of bacteria. These bacteria can survive in areas without oxygen and force metal degradation and/or corrosion via the microorganism's activity. Such a mechanism is primarily observed in the presence of anoxic water.

A major type of anaerobic corrosion is hydrogen corrosion, which involves a redox reaction that reduces hydrogen ions to form molecular hydrogen.

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