'internally-generated' originates from the combination of 'internal' and 'generate.' 'Internal' comes from Latin 'internus,' meaning 'inward' or 'inside,' and 'generate' comes from Latin 'generare,' meaning 'to produce.'

'Internal' evolved from the Latin 'internus' through Old French 'internel,' and 'generate' evolved from Latin 'generare' through Middle English 'generaten.'

Initially, 'internal' meant 'inside' or 'inward,' and 'generate' meant 'to produce.' The combined term 'internally-generated' retains these meanings, referring to something produced from within.