'pre-purchase' originates from the prefix 'pre-' meaning 'before' and the word 'purchase' from Old French 'purchaser', meaning 'to acquire'.

'purchase' evolved from the Old French word 'purchaser', which was derived from Latin 'per-' meaning 'through' and 'captare' meaning 'to seize'.

Initially, 'purchase' meant 'to acquire or obtain', and this meaning has largely remained the same in modern usage.