of, or relating to biochemistry / characterized by, produced by, or involving chemical processes in living organisms

a chemical substance derived from a biological source

With reference to biochemistry.

plural of biochemical

(informal) biochemistry (science or industry)

plural of biochemical pregnancy

Synonym of chemical pregnancy

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.

plural of biochemical oxygen demand