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English definition of “nitrifying bacteria”

nitrifying bacteria

noun [pl]  /ˈnɑɪ·trəˌfɑɪ·ɪŋ bækˈtɪər·i·ə/ us  
bacteria in the dirt on the surface of the earth that change the nitrogen (= gas) in dead plants into a form that growing plants can use for food
(Definition of nitrifying bacteria from the Cambridge Academic Content Dictionary © Cambridge University Press)
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