Erode/ɪˈrəʊd/ Definition 1 of 2Pro Tip 1/3Physical Change Refers to actual wear on tangible objects, like land. Waves eroded the seaside cliffs. Pro Tip 2/3Slow Process Describes a gradual change, not happening overnight. Foot traffic eroded the ancient monument's stairs. Pro Tip 3/3Natural Forces Often used with weather or environmental elements causing the damage. Acid rain eroded the statue's features.