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denitrify

[dee-nahy-truh-fahy]
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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.
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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
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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