nitrogen fixation
- the conversion of atmospheric nitrogen into nitrogenous compounds by bacteria () found in the root nodules of legumes and certain other plants, and in the soil
- the conversion of free nitrogen into nitrogenous compounds of commercial value by any of various processes
See nitrogen fixation in American Heritage Dictionary 4
noun- The conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes.
- The conversion by certain soil microorganisms, such as rhizobia, of atmospheric nitrogen into compounds that plants and other organisms can assimilate.
Related Forms:
- niˈtro·gen-fixˌer (nīˈtrə-jən-fĭkˌsər) noun
- niˈtro·gen-fixˌing adjective
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