nitrogenase
ni·tro·ge·nase
noun\nī-ˈträj-ə-ˌnās, ˈnī-trə-jə-, -ˌnāz\
Definition of NITROGENASE
: an iron- and molybdenum-containing enzyme of various nitrogen-fixing microorganisms (as some bacteria) that catalyzes the reduction of molecular nitrogen to ammonia
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