'Age' originates from Old French, specifically the word 'aage,' where 'a-' meant 'to' and 'age' meant 'age or period.'

'Aage' transformed into the Middle English word 'age,' and eventually became the modern English word 'age.'

Initially, it meant 'a period of life,' but over time it evolved into its current meanings of 'length of time' and 'historical period.'