1. The chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound) 
2. The oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants)

Derived forms: nitrifications

See also: nitrify

Type of: chemical action, chemical change, chemical process, oxidation, oxidisation [Brit], oxidization

Encyclopedia: Nitrification

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