nitric bacteria(n = noun.animal) nitrobacteria - soil bacteria that convert nitrites to nitrates;
is a kind of eubacteria, eubacterium, true bacteria
is a member of genus nitrobacter, nitrobacter

bacteria, bacteria bed, bacteria family, bacteria genus, bacteria order, bacteria species, endospore-forming bacteria, enteric bacteria, gliding bacteria, nitric, nitric acid, nitric bacterium, nitric oxide, nitrous bacteria, penicillin-resistant bacteria, phototrophic bacteria, phototropic bacteria, potato scab bacteria, purple bacteria, pus-forming bacteria, ring rot bacteria, slime bacteria, sulfur bacteria, sulphur bacteria, true bacteria