1794, from French nitrogène, coined 1790 by French chemist Jean Antoine Chaptal (1756-1832), from comb. form of Greek nitron "sodium carbonate" (see nitro-) + French gène "producing," from Greek -gen "giving birth to" (see -gen). The gas was identified in part by analysis of nitre. Earlier name (1772) was mephitic air, and Lavoisier called it azote (see azo-).
例文
1. The atmosphere consist of more than 70%of nitrogen .
大気中に70%以上の窒素ガスが含有されている
2.Every tonne of coal contains,on average,30 kilograms of nitrogen .
石炭1トン当たり平均30 kgの窒素を含む.
3.The plant requires nitrogen in order to make proteins.