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installation

American  
[in-stuh-ley-shuhn] / ˌɪn stəˈleɪ ʃən /

noun

  1. something installed, install, as machinery or apparatus placed in position or connected for use.

  2. the act of installing. install.

  3. the fact of being installed. install.

  4. Military. any more or less permanent post, camp, station, base, or the like, for the support or carrying on of military activities.

installation British  
/ ˌɪnstəˈleɪʃən /

noun

  1. the act of installing or the state of being installed

  2. a large device, system, or piece of equipment that has been installed

  3. a military establishment usually serving in a support role

  4. an art exhibit often involving video or moving parts where the relation of the parts to the whole is important to the interpretation of the piece

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • preinstallation noun
  • reinstallation noun

Etymology

Origin of installation

First recorded in 1600–10, installation is from the Medieval Latin word installātiōn- (stem of installātiō ). See install, -ation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The installation also features tools from scribal workshops and information about the restoration of “Ankhmerwer.”

From The Wall Street Journal • Mar. 30, 2026

Smee estimates they spent about $20,000 in total on design fees, plants, removal and installation before the rebate.

From Los Angeles Times • Mar. 30, 2026

Elsewhere, the installation of Dame Sarah Mullally, the new Archbishop of Canterbury, will be going ahead at Canterbury Cathedral.

From BBC • Mar. 21, 2026

But it’s worth remembering a theory developed by economist Carlota Perez in the early 2000s: Big Bang technologies follow a predictable three-step life cycle of installation boom, mid point financial crisis and longer term adoption.

From Barron's • Mar. 19, 2026

People telephone the branch office to request an installation, or to complain about ghost signals, interference, starlings on the wires, and out goes Volkheimer.

From "All the Light We Cannot See" by Anthony Doerr

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.