- The condition of being firmly attached or set.
- In histology, the rapid killing of tissue elements and their preservation and hardening to retain as nearly as possible the same relationship they had in the living body.
- In chemistry, the conversion of a gas into solid or liquid form by chemical reactions, with or without the help of living tissue.
- In psychoanalysis, the quality of being firmly attached to a particular person, object, or period in one's development.
- In physiologic optics, the coordinated positioning and accommodation of both eyes that result in bringing or maintaining a sharp image of a stationary or moving object on the fovea of each eye.
[L. figo, pp. fixus, to fix, fasten]