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Definition of nitrogen noun from the Oxford Advanced Learner's Dictionary

 

nitrogen

 noun
noun
BrE BrE//ˈnaɪtrədʒən//
 
; NAmE NAmE//ˈnaɪtrədʒən//
 
[uncountable] (symbol N) The Earth and the atmosphere
 
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a chemical element. Nitrogen is a gas that is found in large quantities in the earth’s atmosphere. See related entries: The Earth and the atmosphere Word Origin late 18th cent.: from French nitrogène (from nitre, from Latin nitrum, from Greek nitron + -gen).
See the Oxford Advanced American Dictionary entry: nitrogen

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