If rock or soil erodes or is eroded by the weather, sea, or wind, it cracks and breaks so that it is gradually destroyed. By 1980, Miami beach had all but totally eroded Once exposed, soil is quickly eroded by wind and rain. = wear away + eroded erod·ed the deeply eroded landscape
If someone's authority, right, or confidence erodes or is eroded, it is gradually destroyed or removed. His critics say his fumbling of the issue of reform has eroded his authority America's belief in its own God-ordained uniqueness started to erode
If the value of something erodes or is eroded by something such as inflation or age, its value decreases. Competition in the financial marketplace has eroded profits The value of the dollar began to erode rapidly just around this time