'revalidation' originates from Latin, specifically the word 'validus,' where 're-' meant 'again' and 'validus' meant 'strong or valid.'

'validus' transformed into the French word 'valider,' and eventually became the modern English word 'validate,' with 're-' added to form 'revalidation.'

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