noun (n)

• an abnormal state in which development has stopped prematurely(noun.state)

  Synonym:
  arrested development, infantile fixation, regression
  

  source: wordnet30
• an unhealthy and compulsive preoccupation with something or someone(noun.cognition)

  Synonym:
  obsession
  

  source: wordnet30
• the activity of fastening something firmly in position(noun.act)

  source: wordnet30
• (histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body(noun.act)

  Synonym:
  fixing
  

  source: wordnet30
• The act of fixing, or the state of being fixed.(noun)

  source: webster1913