Search Result for "nitrosobacteria": 
Wordnet 3.0

NOUN (1)

1. soil bacteria that oxidize ammonia to nitrites;
[syn: nitrosobacteria, nitrous bacteria]



WordNet (r) 3.0 (2006):

nitrosobacteria
    n 1: soil bacteria that oxidize ammonia to nitrites [syn:
         nitrosobacteria, nitrous bacteria]