Inflected forms: in·stalled, in·stall·ing, in·stalls also in·stals 1. To connect or set in position and prepare for use: installed the new furnace; installed software on my computer.2. To induct into an office, rank, or position: a ceremony to install the new governor.3. To settle in an indicated place or condition; establish: installed myself in the spare room.
ETYMOLOGY:
Middle English installen, to place in office, from Old French installer, from Medieval Latin nstallre : Latin in-, in; see in2 + stallum, stall, place; see stel- in Appendix I.