Pronunciation: (fik-sā'shun),[key] —n. 1. the act of fixing or the state of being fixed.
2. Chem. a. reduction from a volatile or fluid to a stable or solid form.
b. the process of converting atmospheric nitrogen into a useful compound, as a nitrate fertilizer.
3. Photog.the process of rendering an image permanent by removal of light-sensitive silver halides.
4. Psychoanal.a partial arrest of emotional and instinctual development at an early point in life, due to a severe traumatic experience or an overwhelming gratification.
5. a preoccupation with one subject, issue, etc.; obsession: All her life she had a fixation on stories of violent death.