abrasion (corrasion) The erosive (see EROSION) action that occurs when rock particles of varying size are dragged over or hurled against a surface. Some common agents of abrasion are the bed load of streams, rock debris embedded in the bases of glaciers, and sand and shingle transported by wind or waves.

abrasion(corrasion) The erosive (see erosion) action that occurs when rock particles of varying sizes are dragged over or hurled against a surface. Some common agents of abrasion are the bed load of streams, rock debris embedded in the bases of glaciers, and sand and shingle transported by wind or waves.

a·bra·sion / əˈbrāzhən/ • n. the process of scraping or wearing away: the metal is resistant to abrasion. ∎  an area damaged by scraping or wearing away: there were cuts and abrasions to the lips and jaw.

abrasion (ă-bray-zhŏn) n. a minor wound in which the surface of the skin or a mucous membrane is worn away by rubbing or scraping.