fixation

/fɪkˈseɪʃən/
noun
  1. An intense or obsessive interest in something or someone.
    • She has a fixation with cleanliness and washes her hands constantly.
    • The child's fixation with dinosaurs led him to learn all their names.
    • His fixation on video games made it hard for him to focus on homework.
  2. The act of making something stable or unchanging, especially in a scientific or technical context.
    • The fixation of carbon dioxide occurs during photosynthesis.
    • The fixation of nitrogen in the soil is important for plant growth.
    • In photography, fixation removes unexposed silver halide from the film.
Antonyms
What does "fixation" mean? | whatsthatwordmean | whatsthatwordmean