Nantoka/二氧化氮èr yǎng huà dàn二氧化氮 (èr yǎng huà dàn) is a Chinese word meaning “nitrogen dioxide”.Meanings1nitrogen dioxideCharacters in 二氧化氮二èr · two氧yǎng · oxygen (chemistry)化huà · to make into氮dàn · nitrogen (chemistry)Related words第二second二two变化(intransitive) to change; to vary化to make into化variant of 花[hua1]文化culture二十twenty; 20化学chemistry化妆to put on makeup十二twelve氧气oxygen周二TuesdayStudy Chinese with flashcards →