Fixation in human psychology refers to the state where an individual becomes obsessed with an attachment to another human, animal or inanimate object.

Fixation in biochemistry, histology, cell biology and pathology refers to the technique of preserving a specimen for microscopic study, making it intact and stable, but dead.

Fixation in law refers to a recording. Only fixations can be copyrighted, not the ideas behind those fixations.

Fixation in reading or speed reading refers to the human eye focusing upon an artifact of printed text such as white space or a word. A human being reads by fixating his eyes from one artifact to the next.

Fixation can also refer to:

• Nitrogen fixation
• Carbon fixation