- some of numerous earth micro-organisms that take part in the nitrogen period, oxidizing ammonium compounds into nitrites or nitrites into nitrates.
- Any if the several types of micro-organisms inside soil that be a part of the nitrogen period, oxidizing ammonium, and natural nitrogen substances into the more soluble nitrite and nitrate.
- any of the micro-organisms within the soil that take part in the nitrogen pattern; they oxidize ammonium compounds into nitrites or oxidize nitrites into nitrates
Hyponym for "nitrobacterium"
Hypernym for "nitrobacterium"