'erosional' originates from the word 'erosion', which comes from Latin 'erosio', meaning 'a gnawing away'.

'erosio' transformed into the French word 'érosion', and eventually became the modern English word 'erosion', from which 'erosional' is derived.

Initially, 'erosion' meant 'a gnawing away', but over time it evolved to mean the process of eroding or being eroded by wind, water, or other natural agents.