'gradually-captured' originates from the combination of 'gradually' and 'captured'. 'Gradually' comes from the Latin word 'gradualis', meaning 'step by step', and 'captured' comes from the Latin word 'captura', meaning 'a taking'.

'gradually' evolved from the Latin 'gradualis' through Old French 'graduel', and 'captured' evolved from the Latin 'captura' through Old French 'capture'.

Initially, 'gradually' meant 'step by step', and 'captured' meant 'a taking'. Over time, the combined term 'gradually-captured' evolved to describe something captured in a slow and progressive manner.