Fixation may refer to: Carbon fixation, a biochemical process, usually driven by photosynthesis, whereby carbon dioxide is converted into organic compounds Fixation (alchemy), a process in the alchemical magnum opus Fixation (histology) in biochemistry, histology, cell biology and pathology, the technique of preserving a specimen for microscopic study Fixation (population genetics), the state when every individual in a population has the same allele at a particular locus Fixation (psychology), the state in which an individual becomes obsessed with an attachment to another human, an animal, or an inanimate object Fixation (surgical), an operative technique in orthopedics Fixation (visual) maintaining the gaze in a constant direction Fixation agent, a process chemical Fixation in Canadian copyright law, a concept in Canadian copyright law Nitrogen fixation, a process by which nitrogen is converted from its inert molecular form to a compound more readily available and useful to living organisms Session fixation, computer security attack Target fixation, attentional phenomenon “Fixation”, an episode of The Good Doctor See also Fix (disambiguation)