fixation
noun /fɪkˈseɪʃn/
  /fɪkˈseɪʃn/
- [countable] a very strong interest in somebody/something, that is not normal or natural- a mother fixation
- Winning the title again has become a fixation for him.
- fixation with/on somebody/something He's got this fixation with cleanliness.
 
- [uncountable] (specialist) the process of a gas becoming solid- nitrogen fixation
 
Word Originlate Middle English (originally denoting the process of reducing a volatile spirit or essence to a permanent bodily form): from medieval Latin fixatio(n-), from fixare ‘to fix’, both from Latin fixus, past participle of figere ‘fix, fasten’.