noun (n)

• the act of using(noun.act)

  Example:
  Skilled in the utilization of computers.
  

  Synonym:
  employment, exercise, usage, use, utilisation
  

  source: wordnet30
• the state of having been made use of(noun.state)

  Example:
  The rate of utilization.
  

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

  source: webster1913