nitrogen fixation

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• Nitrogen fixation — is the natural process, either biological or abiotic, by which nitrogen (N2) in the atmosphere is converted into ammonia (NH3).[1] This process is essential for life because fixed nitrogen is required to biosynthesize the basic building blocks of …   Wikipedia

• nitrogen fixation — 1. any process of combining atmospheric nitrogen with other elements, either by chemical means or by bacterial action: used chiefly in the preparation of fertilizers, industrial products, etc. 2. this process as performed by certain bacteria… …   Universalium

• nitrogen fixation — The incorporation of atmospheric nitrogen into ammonia by various bacteria, catalysed by nitrogenase. This is an essential stage in the nitrogen cycle and is the ultimate source of all nitrogen in living organisms. In the sea, the main nitrogen… …   Dictionary of molecular biology

• nitrogen fixation —   a process carried out by certain algae and soil bacteria whereby atmospheric nitrogen is incorporated to form nitrogen based organic compounds. A crucial part of the nitrogen cycle …   Geography glossary

• nitrogen fixation — The metabolic process in which atmospheric molecular nitrogen is reduced to ammonia; carried out by cyanobacteria, Rhizobium, and other nitrogen fixing bacteria …   Dictionary of microbiology

• nitrogen fixation — noun Date: 1895 the metabolic assimilation of atmospheric nitrogen into ammonia by soil microorganisms and especially rhizobia …   New Collegiate Dictionary

• nitrogen fixation — noun the conversion of atmospheric nitrogen into ammonia and organic derivatives, by natural means, especially such conversion, by microorganisms in the soil, into a form that can be assimilated by plants See Also: nitrogen fixing …   Wiktionary

• nitrogen fixation — фиксация (усвоение) (организмом) азота …   Большой англо-русский и русско-английский словарь

• nitrogen fixation — фиксация (усвоение) (организмом) азота …   Англо-русский словарь технических терминов

• nitrogen fixation — азотфиксация * * * фиксация азота …   Англо-русский словарь по экологии