'symmetrical' originates from Greek, specifically the word 'symmetria,' where 'syn-' meant 'together' and 'metron' meant 'measure.'

'symmetria' transformed into the Latin word 'symmetria,' and eventually became the modern English word 'symmetrical' through Middle English.

Initially, it meant 'having a common measure,' but over time it evolved into its current meaning of 'having balanced proportions.'