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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