'conventionally-shaped' originates from 'convention,' which comes from Latin, specifically the word 'conventio,' where 'con-' meant 'together' and 'venire' meant 'to come.'

'conventio' transformed into the Old French word 'convention,' and eventually became the modern English word 'convention' through Middle English.

Initially, it meant 'a coming together or agreement,' but over time it evolved into its current meaning of 'adhering to traditional standards.'