'reintroduce' originates from Latin, specifically the word 'reintroducere,' where 're-' meant 'again' and 'introducere' meant 'to lead in.'

'reintroducere' transformed into the French word 'réintroduire,' and eventually became the modern English word 'reintroduce' through Middle English.

Initially, it meant 'to lead in again,' and this meaning has largely remained the same in modern usage.