nitrifying bacterium

noun

plural nitrifying bacteria

: any of various aerobic gram-negative bacteria (as of the genera Nitrosomonas, Nitrosococcus, and Nitrobacter) commonly found in soil and water and obtaining energy through the process of nitrification

They are nitrifying bacteria, formerly believed to occur only in the soil and natural water systems, where they play key roles "fixing" nitrogen and making this element available to growing plants.

Bernard Dixon, The Independent (London), 16 Nov. 1992

Note: Nitrifying bacteria are sometimes classified in the paraphyletic family (Nitrobacteraceae).

单词	nitrifying bacterium
释义	nitrifying bacterium noun plural nitrifying bacteria : any of various aerobic gram-negative bacteria (as of the genera Nitrosomonas, Nitrosococcus, and Nitrobacter) commonly found in soil and water and obtaining energy through the process of nitrification They are nitrifying bacteria, formerly believed to occur only in the soil and natural water systems, where they play key roles "fixing" nitrogen and making this element available to growing plants. Bernard Dixon, The Independent (London), 16 Nov. 1992 Note: Nitrifying bacteria are sometimes classified in the paraphyletic family (Nitrobacteraceae). Word History First Known Use 1880, in the meaning defined above
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nitrifying bacterium

noun

Word History