硝しょう酸さん菌きんしょうさんきんMeanings1nounnitrate bacteria; nitrate-forming bacteriaTechnical term in microbiology; refers to bacteria that oxidize nitrites into nitrates, such as Nitrobacter.硝しょう酸さん菌きんは土ど壌じょう中ちゅうの窒ちっ素そ循じゅん環かんに重じゅう要ような