'refiner' originates from Old French, specifically the word 'refiner,' where 're-' meant 'again' and 'finir' meant 'to finish or complete.'

'refiner' changed from the Old French word 'refiner' and eventually became the modern English word 'refiner.'

Initially, it meant 'to finish or complete again,' but over time it evolved into its current meaning of 'to remove impurities.'