1. •installation
   

n.

1. 1.a. the act of installing. b. the state of being installed. Also called installment.
   

2. 2.a system of machinery or other apparatus set up for use.
   

3. 3.a permanent military base
   

http://www.answers.com/topic/installation

last accessed 22.11.2011

1. •Installation art
   

Installation art describes an artistic genre of three-dimensional works that are often site-specific and designed to transform the perception of a space. Generally, the term is applied to interior spaces, whereas exterior interventions are often called Land art; however the boundaries between these terms overlap

http://en/wikipedia.org.wiki/installation_art

last accessed 22.11.2011

1. •installation (computer programs)
   

Installation (or setup) of a program (including drivers, plugins, etc.) is the act of putting the program onto a computer system so that it can be executed.

Because the requisite process varies for each program and each computer, many programs (including operating systems) come with a general-purpose or dedicated installation program called an installer - a specialized program which automates most of the work required for their installation

http://en.widipedia.org/wiki/installation_(computer_programs)

last accessed 22.11.2011