'traditionally-preserved' originates from the combination of 'traditionally' and 'preserved', where 'traditionally' comes from 'tradition' meaning 'customs or beliefs passed down' and 'preserved' from 'preserve' meaning 'to maintain or keep in original state'.

'traditionally-preserved' changed from the combination of 'tradition' and 'preserve' in English, eventually becoming the modern English term 'traditionally-preserved'.

Initially, it meant 'kept in a traditional manner', and this meaning has largely remained the same in modern usage.