| nitrogen | a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas |
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| nitrogen | the balance between the amount of nitrogen taken in (to the soil or the body) and the amount given off (lost or excreted) |
| nitrogen | the circulation of nitrogen |
| nitrogen | a highly poisonous brown gas (NO2) |
| nitrogen | the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria |
| nitrogen | a toxic compound resembling mustard gas in structure |
| nitrogen | confused or stuporous state caused by high levels of dissolved nitrogen in the blood |
| nitrogen | any of several oxides of nitrogen formed by the action of nitric acid on oxidizable materials |
| nitrogen | a yellow pungent volatile oil (trade name Agene) formerly used for bleaching and aging flour |
| nitrogen | an enzyme of nitrogen-fixing microorganisms that catalyzes the conversion of nitrogen to ammonia |
| nitrogen | treat with nitrogen or a nitrogen compound |
| nitrogen | treat with nitrogen or a nitrogen compound |