'fortuitously-preserved' originates from the Latin word 'fortuitus,' meaning 'by chance,' and the English word 'preserve,' meaning 'to keep safe.'

'fortuitus' transformed into the English word 'fortuitous,' and 'preserve' has been used in English since the Middle Ages, eventually forming the compound adjective 'fortuitously-preserved.'

Initially, 'fortuitous' meant 'by chance,' and 'preserve' meant 'to keep safe.' The compound adjective 'fortuitously-preserved' retains these meanings, indicating something kept safe by chance.