1. an unhealthy obsession with or excessive focus on something
Usage: psychology
2. the process of making something stable, permanent, or unchanging
Usage: technical
3. the process of converting a substance into a stable compound
Usage: chemistry; biology

Examples

• His fixation on video games prevented him from studying.
• She developed an unhealthy fixation with her appearance.
• The fixation of the broken bone required surgery.
• Nitrogen fixation is essential for plant growth.
• The therapist helped him overcome his fixation on past failures.
• Carbon fixation occurs during photosynthesis.
• Her fixation on perfection made her anxious about every detail.