Definition of nitrogenase in US English:

nitrogenase

noun

Biochemistry
  • Any of a class of complex enzymes (typically containing iron and molybdenum atoms) which bring about the conversion of molecular nitrogen into ammonium ions, as the first step in biological nitrogen fixation.

Origin

1930s. From nitrogen + -ase.

Pronunciation

nitrogenase

/nʌɪˈtrɒdʒɪneɪz/