An installation. (Usage originated as a truncated form of the word installation.)
Installer. A software utility that installs an application.
To connect, set up or prepare something for use, often specifically (in Computing) to transfer software onto a device's permanent storage and put it in a state where it is ready to be run when needed, usually decompressing it if necessary and performing any necessary pre-first-run configuration.
To admit formally into an office, rank or position.
To establish or settle in.
The outer side of a window or door frame.
A revelation; an uncovering of what was hidden in the scene or story.
To communicate that which could not be known or discovered without divine or supernatural instruction.
To uncover; to show and display that which was hidden.