二に酸さん化かマンガンにさんかマンガンMeanings1nounmanganese dioxide (MnO2)Inorganic compound used as a catalyst, in dry-cell batteries, and as a pigment.乾かん電でん池ちには二に酸さん化かマンガンが使つかわれている。Manganese dioxide is used in dry-cell batteries.
