Definition of nitrogen in English:


Syllabification: ni·tro·gen
Pronunciation: /ˈnītrəjən


The chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth’s atmosphere. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (195.8°C) and is used as a coolant. (Symbol: N)
More example sentences
  • Plant tissue was ground in liquid nitrogen and the protein extracted as described earlier.
  • The data demonstrate that nitrogen and phosphorus are in especially short supply.
  • This may be due to the different functions of nitrogen and phosphorus in the plant.


late 18th century: from French nitrogène (see nitro-, -gen).

Definition of nitrogen in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day rebuff
Pronunciation: rɪˈbʌf
reject (someone or something) in an abrupt manner…