納豆菌 [ㄋㄚˋ ㄉㄡˋ ㄐㄩㄣ; na4 dou4 jun1] Bacillus subtilis (formerly Bacillus natto), a common soil bacterium ◄ ►
納豆菌 なっとうきん noun (common) (futsuumeishi) bacillus subtilis natto ◄ ►