nitrogen fixation

noun

Definition of nitrogen fixation

:the conversion of atmospheric nitrogen into a combined form (such as ammonia) through chemical and especially biological action (such as that of soil rhizobia)

First Known Use of nitrogen fixation

1893


NITROGEN FIXATION Defined for Kids

nitrogen fixation

noun nitrogen fix·a·tion \ -fik-ˈsā-shən \

Definition of nitrogen fixation for Students

: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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