installation — English Dictionary

Noun

1. An act of installing.

   Usage

   • Countable
   • Uncountable

   Examples

   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.

   Usage

   • Countable
   • Uncountable

3. A work of installation art.

   Usage

   • Countable
   • Uncountable

   Examples

   The museum is displaying a modern art installation.

   More examples (1)

   Represented by Olney Gleason gallery, she was the subject of a 2025 solo show at the MSU Broad Art Museum in Michigan and recently unveiled a permanent installation at the Princeton University Art Museum.

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

   Usage

   • Countable
   • Uncountable

   Examples

   A military installation was built near the border.

Noun

1. the act of installing something (as equipment)

   Synonyms

   installinginstallmentinstalment

   Broader terms

   beginningstartcommencement

   Examples

   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

   Synonyms

   facility

   Broader terms

   artifactartefact

   Examples

   the assembly plant is an enormous facility

3. a formal entry into an organization or position or office

   Synonyms

   initiationinduction

   Broader terms

   ceremonyceremonialceremonial occasionobservance

   Examples

   his initiation into the club

   he was ordered to report for induction into the army

   More examples (1)

   he gave a speech as part of his installation into the hall of fame