Biochemical oxygen demand



the oxygen required by aerobic organisms, as those in sewage, for metabolism.
Abbreviation: BOD.
noun
a measure of the organic pollution of water: the amount of oxygen, in mg per litre of water, absorbed by a sample kept at 20°C for five days BOD
biochemical oxygen demand
(bī’ō-kěm’ĭ-kəl)
The amount of oxygen required by aerobic microorganisms to decompose the organic matter in a sample of water, such as one polluted by sewage. It is used as a measure of the degree of water pollution.

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