'changeover' originates from the combination of 'change' and 'over', where 'change' meant 'to make different' and 'over' indicated 'completion or transition'.

'Changeover' evolved from the Middle English word 'chaungen' and the Old English 'ofer', eventually becoming the modern English word 'changeover'.

Initially, it meant 'to make a complete transition', and this meaning has largely remained the same in modern usage.