nitrify

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nitrify

(nī′trə-fī′)
tr.v. nitri·fied, nitri·fying, nitri·fies
1. To oxidize (an ammonia compound) into a nitrite or (a nitrite) into a nitrate, especially by the action of nitrifying bacteria.
2. To treat or combine with nitrogen or compounds containing nitrogen.

ni′tri·fi·ca′tion (-fĭ-kā′shən) n.
ni′tri·fi′er n.