Nitrobacteriaceae n 1: usually rod-shaped bacteria that oxidize ammonia or nitrites: nitrobacteria [syn: {Nitrobacteriaceae}, {family Nitrobacteriaceae}]
Nitrobacteriaceae \Nitrobacteriaceae\ prop. n. A natural family of usually rod-shaped bacteria that oxidize ammonia or nitrites: nitrobacteria. Syn: family {Nitrobacteriaceae}. [WordNet 1.5]