Last Updated:2025/11/21
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.
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biochemical oxygen demand
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Source Word
biochemical oxygen demand
Noun
countable
uncountable
Japanese Meaning
水中の有機物を分解するために必要な酸素の量 / 水質汚染の指標として利用される値
( plural )