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Definition of Biochemical oxygen demand
1. Noun. The amount of oxygen needed by aerobic microorganisms to decompose all the organic matter in a sample of water; it is used as a measure of pollution. ¹
¹ Source: wiktionary.com
Medical Definition of Biochemical oxygen demand
1. The amount of oxygen aerobicorganisms need to carry out oxidative metabolism in watercontaining organic matter, such as sewage. (09 Oct 1997)