单词	nitrification
释义	nitrification noun ni·​tri·​fi·​ca·​tion ˌnī-trə-fə-ˈkā-shən  : the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates Example Sentences Recent Examples on the Web Biological processes like soil nitrification, wildfires, and lightning also produce NO₂, but research on Earth suggests that these sources provide far less of the overall total than anthropogenic sources—namely the burning of fossil fuels. Meghan Herbst, Wired, 4 Mar. 2021 Word History First Known Use 1798, in the meaning defined above Medical Definition nitrification noun ni·​tri·​fi·​ca·​tion ˌnī-trə-fə-ˈkā-shən  : the oxidation (as by bacteria) of ammonium salts to nitrites and the further oxidation of nitrites to nitrates
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