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Table of Contents -- nitrification POS
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nitrification

Noun

ni=tri=fi=ca=tion

WORDNET DICTIONARY

nitrification(n = noun.process) - the chemical process in which a nitro group is added to an organic compound (or substituted for another group in an organic compound);

Derived form verb nitrify₂

nitrification(n = noun.process) - the oxidation of ammonium compounds in dead organic material into nitrates and nitrites by soil bacteria (making nitrogen available to plants);

Derived forms verb nitrify₃, verb nitrify₁

nitrification, n. [Cf. F. nitrification. see Nitrify.].

The act, process, or result of combining with nitrogen or some of its compounds. [1913 Webster]
A process of oxidation, in which nitrogenous vegetable and animal matter in the presence of air, moisture, and some basic substances, as lime or alkali carbonate, is converted into nitrates. [1913 Webster]
" The process is going on at all times in porous soils and in water contaminated with nitrogenous matter, and is supposed to be due to the presence of a bacteria, such as members of the genus Azotobacter, formerly called nitrification ferments. In former times the process was extensively made use of in the production of saltpeter." [1913 Webster]