'impregnate' originates from Latin, specifically the word 'impraegnare,' where 'in-' meant 'into' and 'praegnare' meant 'to make pregnant.'

'impraegnare' transformed into the Old French word 'empregner,' and eventually became the modern English word 'impregnate' through Middle English.

Initially, it meant 'to make pregnant,' but over time it evolved into its current meaning of 'to fill or saturate something with a substance.'