'installer' originates from the verb 'install', which comes from the Latin word 'installare', where 'in-' meant 'into' and 'stallare' meant 'to place'.

'installare' transformed into the Old French word 'installer', and eventually became the modern English word 'install' through Middle English.

Initially, it meant 'to place into position', but over time it evolved into its current meaning of 'to set up or establish something'.