(1)   The act of installing something (as equipment)
"The telephone installation took only a few minutes"
(2)   A building or place that provides a particular service or is used for a particular industry
"The assembly plant is an enormous facility"
(3)   A formal entry into an organization or position or office
"His initiation into the club"
"He was ordered to report for induction into the army"
"He gave a speech as part of his installation into the hall of fame"


  1. The act of installing or giving possession of an office, rank, or order, with the usual rites or ceremonies; as, the installation of an ordained minister in a parish.
  2. The whole of a system of machines, apparatus, and accessories, when set up and arranged for practical working, as in electric lighting, transmission of power, etc.
  3. A grouping of facilities that constitute a permanent military base