'triumvirate' originates from Latin, specifically the word 'triumvirātus,' where 'triumvir' meant 'one of three men in power.'

'triumvirātus' transformed into the Old French word 'triumvirat,' and eventually became the modern English word 'triumvirate' through Middle English.

Initially, it meant 'a group of three men in power,' but over time it evolved into its current meaning of 'a group of three people sharing power or authority.'