plural noun, singular ni·tro·bac·te·ri·um [nahy-troh-bak-teer-ee-uh m] /ˌnaɪ troʊ bækˈtɪər i əm/.

certain bacteria in the soil involved in nitrifying processes.

Origin of nitrobacteria

First recorded in 1890–95; nitro- + bacteria Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for nitrobacteria


pl n singular -terium (-ˈtɪərɪəm)

soil bacteria of the order Pseudomonadales that are involved in nitrification, including species of Nitrosomonas and Nitrobacter
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