installations

/IH0 N S T AH0 L EY1 SH AH0 N Z/
noun
  1. 1

    An act of installing.

  2. 2

    Something installed, especially 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. 3

    A work of installation art.

  4. 4

    A grouping of facilities that constitute a permanent military base.

Source: https://en.wiktionary.org/wiki/installation, https://en.wiktionary.org/wiki/installations