Definition of "installation" in English

noun

1. An act of installing.

   • The installation of the new software took only a few minutes.

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. A work of installation art.

   • The museum is displaying a modern art installation.

4. A grouping of facilities that constitute a permanent military base.

   • A military installation was built near the border.