nitrobacterium

Noun. Any if the several species of bacteria in the soil that take part in the nitrogen cycle, oxidizing ammonium, and organic nitrogen compounds to the more soluble nitrite and nitrate.

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.