denitrifying bacterium
Also found in: Dictionary.
Related to denitrifying bacterium: Nitrifying Bacterium
denitrifying bacterium
(dē-nī′trə-fī′ĭng)n.
Any of various bacteria that convert nitrate or nitrite into nitrogen gas in the absence of oxygen and play an important role in the nitrogen cycle.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.