'radially' originates from the Latin word 'radialis', where 'radius' meant 'ray' or 'spoke of a wheel'.

'radialis' transformed into the French word 'radial', and eventually became the modern English word 'radial', with 'radially' as its adverbial form.

Initially, it meant 'pertaining to a ray or radius', but over time it evolved into its current meaning of 'in a manner that extends from a central point'.