'amphibrach' originates from Greek, specifically the word 'amphibrakhys,' where 'amphi-' meant 'on both sides' and 'brakhys' meant 'short.'

'amphibrakhys' transformed into the Latin word 'amphibrachus,' and eventually became the modern English word 'amphibrach.'

Initially, it meant 'a short syllable on both sides,' and this meaning has largely remained the same in modern usage.