'erosion-prone' originates from the combination of 'erosion' and 'prone', where 'erosion' comes from Latin 'erosio', meaning 'a gnawing away', and 'prone' from Latin 'pronus', meaning 'leaning forward'.

'erosion' changed from the Latin word 'erosio' and eventually became the modern English word 'erosion'. 'Prone' evolved from the Latin 'pronus' to the modern English 'prone'.

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