nitrogen fixation

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nitrogen fixation

n.
1. The conversion of atmospheric nitrogen into compounds, such as ammonia, by natural agencies or various industrial processes.
2. The conversion by certain soil microorganisms, such as rhizobia, of atmospheric nitrogen into compounds that plants and other organisms can assimilate.

ni′tro·gen-fix′er (-fĭk′sər) n.
ni′tro·gen-fix′ing adj.

nitrogen fixation

n
1. (Biology) the conversion of atmospheric nitrogen into nitrogen compounds by certain bacteria, such as Rhizobium in the root nodules of legumes
2. (Chemistry) a process, such as the Haber process, in which atmospheric nitrogen is converted into a nitrogen compound, used esp for the manufacture of fertilizer
ˈnitrogen-ˌfixing adj

ni′trogen fixa`tion


n.
1. any process of combining atmospheric nitrogen with other elements, as used in the preparation of fertilizers and industrial products.
2. this process as performed by bacteria found in the nodules of leguminous plants, thereby making nitrogenous compounds available to the host plants.
[1890–95]

nitrogen fixation

The process by which free nitrogen from the air is combined with other elements to form organic compounds that plants can use as nutrients. Cyanobacteria and certain other forms of bacteria, especially those that live in the roots of legumes, convert gaseous nitrogen into organic compounds.

nitrogen fixation

The conversion of nitrogen gas to nitrates by some bacteria.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.nitrogen fixation - the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacterianitrogen fixation - the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria
biological process, organic process - a process occurring in living organisms