(chemistry, biochemistry) 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

any process, such as photosynthesis, whereby atmospheric carbon dioxide is converted into organic compounds

plural of carbon fixation

(computer security) An exploit where the attacker sets or finds out the victim's session identifier.

which fixates, or is fixated