Dictionary
nitrogen fixation
noun
Definition of NITROGEN FIXATION
: the conversion of atmospheric nitrogen into a combined form (as ammonia) through chemical and especially biological action (as that of soil rhizobia)
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First Known Use of NITROGEN FIXATION
1895
NITROGEN FIXATION Defined for Kids
nitrogen fixation
noun nitrogen fix·a·tion \-fik-ˈsā-shən\
Definition of NITROGEN FIXATION for Kids
: the changing of nitrogen into an available and useful form especially by bacteria (nitrogen–fixing bacteria)
Medical Dictionary
nitrogen fixation
noun
Medical Definition of NITROGEN FIXATION
1
: the industrial conversion of free nitrogen into combined forms useful especially as starting materials for fertilizers or explosives
2
: the metabolic assimilation of atmospheric nitrogen by soil microorganisms and especially rhizobia and its release for plant use by nitrification in the soil on the death of the microorganisms
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