'individual-based' originates from the combination of 'individual' and 'based', where 'individual' comes from Latin 'individuus', meaning 'indivisible', and 'based' comes from Old French 'basse', meaning 'foundation'.

'individual' changed from the Latin word 'individuus' and eventually became the modern English word 'individual'. 'Based' evolved from the Old French word 'basse' to the modern English 'based'.

Initially, 'individual' meant 'indivisible', but over time it evolved to mean 'single person or thing'. 'Based' originally meant 'foundation' and has retained a similar meaning in modern usage.