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Noun: erosion  i'row-zhun
  1. (geology) the mechanical process of wearing or grinding something down (as by particles washing over it), also figuratively
    - eroding, eating away, wearing, wearing away, degradation
  2. Condition in which the earth's surface is worn away by the action of water and wind
  3. A gradual decline of something
    "after the accounting scandal there was an erosion of confidence in the auditors"
  4. Wearing away by chemical action
    - corrosion, corroding
  5. (medicine) a shallow ulceration or lesion, usually involving skin or epithelial tissue

Derived forms: erosions

Type of: chemical action, chemical change, chemical process, decline, diminution, environmental condition, geologic process, geological process

Encyclopedia: Erosion