略語大辞典 [Chem] 25 NO nitrous oxide 亜酸化窒素笑気. 全身麻酔剤. 無色の気体. 甘い味と快い臭いを持つ.nitrous oxide; or nitrogen monoxide; orfactitious air; or laughing gas; N2O; [Chem:Med]. 丸善「略語大辞典」JLogosID : 11863093