1. Convert into nitric acid, nitrous acid, or nitrate, especially with the action of nitrobacteria 
2. Treat with nitrogen or a nitrogen compound
   - nitrogenize, nitrogenise [Brit] 
3. Treat (soil) with nitrates

Derived forms: nitrifying, nitrified, nitrifies

See also: nitrate, nitric acid, nitrification, nitrogen, nitrous acid

Type of: convert, feed, fertilise [Brit], fertilize, process, treat

Antonym: denitrify

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