IPA: /ɪˈroʊʒənl/
KK: /ɪˈroʊʒənl/
Relating to or resulting from the process of erosion, which is the gradual wearing away of land or soil by natural forces such as water, wind, or ice.
The erosional features in the landscape were shaped by centuries of wind and rain.
Erosional → It is formed from "erosion" (from Latin "erosio", meaning to gnaw away) and the suffix "-al" (meaning pertaining to). The word "erosional" refers to something that is related to the process of erosion.
Think of the word 'erosion' which means to 'gnaw away' at something, and remember that 'erosional' describes anything related to that process.