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denitrify

[dee-nahy-truh-fahy]
verb (used with object), de·ni·tri·fied, de·ni·tri·fy·ing. Chemistry.
  1. to remove nitrogen or nitrogen compounds from.
  2. to reduce (nitrates) to nitrites, ammonia, and free nitrogen, as in soil by microorganisms.

Origin of denitrify

First recorded in 1890–95; de- + nitrify
Related formsde·ni·tri·fi·ca·tion, nounde·ni·tri·fi·er, de·ni·tri·fi·ca·tor, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for denitrify

denitrify

verb -fies, -fying or -fied
  1. to undergo or cause to undergo loss or removal of nitrogen compounds or nitrogen
Derived Formsdenitrification, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012