'achlamydate' originates from Greek, specifically the word 'achlamydatos,' where 'a-' meant 'without' and 'chlamys' meant 'cloak or covering.'

'achlamydatos' transformed into the Latin word 'achlamydatus,' and eventually became the modern English word 'achlamydate.'

Initially, it meant 'without a cloak or covering,' and this meaning has largely remained the same in modern usage.