'reducible' originates from Latin, specifically the word 'reducibilis,' where 're-' meant 'back' and 'ducere' meant 'to lead.'

'reducibilis' transformed into the French word 'réductible,' and eventually became the modern English word 'reducible' through Middle English.

Initially, it meant 'capable of being led back,' but over time it evolved into its current meaning of 'capable of being reduced or simplified.'