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installation

[in-stuh-ley-shuh n]
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noun
  1. something installed, as machinery or apparatus placed in position or connected for use.
  2. the act of installing.
  3. the fact of being installed.
  4. Military. any more or less permanent post, camp, station, base, or the like, for the support or carrying on of military activities.

Origin of installation

First recorded in 1600–10, installation is from the Medieval Latin word installātiōn- (stem of installātiō). See install, -ation
Related formspre·in·stal·la·tion, nounre·in·stal·la·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for installation

installation

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

Word Origin and History for installation

n.

"action of installing," mid-15c., of church offices or other positions, from Medieval Latin installationem (nominative installatio), noun of action from past participle stem of installare (see install). Of machinery, etc., "act of setting up," from 1882.

Online Etymology Dictionary, © 2010 Douglas Harper