- certain bacteria in the soil involved in nitrifying processes.
Origin of nitrobacteria
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- soil bacteria of the order Pseudomonadales that are involved in nitrification, including species of Nitrosomonas and Nitrobacter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012