'convex' originates from Latin, specifically the word 'convexus,' where 'con-' meant 'together' and 'vexus' meant 'carried or conveyed.'

'convexus' transformed into the Old French word 'convexe,' and eventually became the modern English word 'convex' through Middle English.

Initially, it meant 'arched or vaulted,' but over time it evolved into its current meaning of 'curving outward.'