What is the definition of erosion

Erosion is the process of eroding or being eroded by wind, water, or other natural agents.

Explanation:

"the problem of soil erosion"

the gradual destruction or diminution of something.

"the erosion of support for the party"

are examples of how it could be used.

Erosion is a process of removal or displacement of the topmost or sub surface layers of the soil. This is caused by physical agents like water, wind or any other agent. It generally affects the fertility of the soil as the essential minerals which are required for the growth of the plants are lost by this process.