'conventionally-preserved' originates from the combination of 'conventionally' and 'preserved'. 'Conventionally' comes from 'convention', which originates from Latin 'conventio', meaning 'agreement'. 'Preserved' comes from Latin 'praeservare', where 'prae-' meant 'before' and 'servare' meant 'to keep'.

'Conventionally' evolved from the Latin 'conventio' through Old French 'convention', and 'preserved' evolved from Latin 'praeservare' through Old French 'preserver'.

Initially, 'conventionally' meant 'according to agreement', and 'preserved' meant 'kept safe'. Over time, 'conventionally-preserved' evolved to mean 'maintained in a traditional manner'.