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biochemical oxygen demand
noun
- the oxygen required by aerobic organisms, as those in sewage, for metabolism. : BOD
biochemical oxygen demand
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-kĕm′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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Word History and Origins
Origin of biochemical oxygen demand1
First recorded in 1925–30
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