'permanently-preserved' originates from the combination of 'permanent' and 'preserve', where 'permanent' comes from Latin 'permanens', meaning 'remaining to the end', and 'preserve' from Latin 'praeservare', meaning 'to keep safe'.

'permanently-preserved' evolved from the combination of the words 'permanent' and 'preserve', which were used separately in Middle English and later combined in modern English.

Initially, 'permanent' meant 'lasting forever', and 'preserve' meant 'to keep safe'. Together, they evolved to mean 'kept in a state that prevents decay indefinitely'.