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English definition of “nitrogen”

nitrogen

noun [U]  /ˈnɑɪ·trə·dʒən/ us  
biology, chemistry a gas, one of the chemical elements, that has no color or taste, is a part of all living things, and forms about 78 percent of the earth’s atmosphere (= mixture of gases surrounding it)
(Definition of nitrogen from the Cambridge Academic Content Dictionary © Cambridge University Press)
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