'impregnation' originates from Latin, specifically the word 'impregnatio,' where 'in-' meant 'into' and 'pregnare' meant 'to make pregnant.'

'impregnatio' transformed into the Old French word 'impregnacion,' and eventually became the modern English word 'impregnation' through Middle English.

Initially, it meant 'to make pregnant,' but over time it evolved to include the meaning of 'infusing or saturating a substance.'