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[dee-nahy-truh-fahy] /diˈnaɪ trəˌfaɪ/
verb (used with object), denitrified, denitrifying. Chemistry
to remove nitrogen or nitrogen compounds from.
to reduce (nitrates) to nitrites, ammonia, and free nitrogen, as in soil by microorganisms.
Origin of denitrify
1890-95; de- + nitrify
Related forms
denitrification, noun
denitrifier, denitrificator, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for denitrify
  • The plant nitrifies but does not denitrify the wastewater.
  • The package plant was originally designed to denitrify using a methanol feed reactor.
  • The oxidation basin is operated to nitrify and denitrify, reducing both the ammonia and nitrate concentrations in the wastewater.
  • Under anaerobic conditions, cyanides denitrify to gaseous nitrogen compounds that enter the atmosphere.
  • The ability to denitrify will be added to the remaining aeration basins in the next few years.
  • The ability to denitrify to an appreciable extent requires that a filter section be anaerobic.
British Dictionary definitions for denitrify


verb -fies, -fying, -fied
to undergo or cause to undergo loss or removal of nitrogen compounds or nitrogen
Derived Forms
denitrification, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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