'asynchrony' originates from Greek, specifically the word 'asynchronos,' where 'a-' meant 'not' and 'synchronos' meant 'occurring at the same time.'

'asynchronos' transformed into the Latin word 'asynchronus,' and eventually became the modern English word 'asynchrony' through Middle English.

Initially, it meant 'not occurring at the same time,' and this meaning has largely remained the same in modern usage.