1 文書を見つけるための辞書。

• n, atomic number 7, nitrogen
• N, Ｎ, 窒素
• a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues
• 通常、無臭、無色で無味の不活性の二分子の気体である共通非金属元素