noun
nitrifying bacteria
Technical term in microbiology and environmental engineering; refers to bacteria that oxidize ammonia to nitrite or nitrate.
硝化細菌はアンモニアを亜硝酸に変える。
Nitrifying bacteria convert ammonia into nitrite.
Compound of 硝化 (しょうか, 'nitrification') and 細菌 (さいきん, 'bacteria').