Definition of biochemical oxygen demand in English:

biochemical oxygen demand

Syllabification: bi·o·chem·i·cal ox·y·gen de·mand
Pronunciation: /ˌbīōˌkeməkəl ˈäksəjən diˌmand/

Entry from US English dictionary

(abbreviation: BOD)

noun

The amount of dissolved oxygen that must be present in water in order for microorganisms to decompose the organic matter in the water, used as a measure of the degree of pollution. Also called biological oxygen demand.

Definition of biochemical oxygen demand in:

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Word of the day ween
Pronunciation: wiːn
verb
be of the opinion; think or suppose