'compulsorily-assembled' originates from the combination of 'compulsorily' and 'assembled', where 'compulsorily' is derived from 'compulsory', meaning 'required by law or a rule', and 'assembled' from 'assemble', meaning 'to gather together'.

'Compulsorily' evolved from the Latin word 'compulsorius', and 'assembled' from the Old French 'assembler', eventually forming the modern English term 'compulsorily-assembled'.

Initially, it meant 'put together by force', and this meaning has largely remained the same in modern usage.