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See also: Erosion, érosion, and erosión


English Wikipedia has an article on:
Effects of soil erosion.


From Middle French erosion, from Latin ērōsiō (eating away), derived from ērōdō.

The first known occurrence in English was in the 1541 translation by Robert Copland of Guy de Chauliac's medical text The Questyonary of Cyrurygens. Copland used erosion to describe how ulcers developed in the mouth. By 1774 erosion was used outside medical subjects. Oliver Goldsmith employed the term in the more contemporary geological context, in his book Natural History, with the quote

"Bounds are thus put to the erosion of the earth by water."



erosion (countable and uncountable, plural erosions)

  1. (uncountable) The result of having been worn away or eroded, as by a glacier on rock or the sea on a cliff face.
  2. (uncountable) The changing of a surface by mechanical action, friction, thermal expansion contraction, or impact.
  3. (uncountable, figurative) The gradual loss of something as a result of an ongoing process.
    the erosion of a person's trust
    trademark erosion, caused by everyday use of the trademarked term
    • 2020 November 8, Si Xiang, “The U.S. Election Is a Battle Between Good and Evil”, in Minghui[1]:
      No social system that isn’t built upon the belief to the divine, or morality and traditional values, can withstand the erosion and degeneration of humankind’s morality, including democracy.
  4. (uncountable) Destruction by abrasive action of fluids.
  5. (mathematics, image processing) One of two fundamental operations in morphological image processing from which all other morphological operations are derived.
  6. (dentistry) Loss of tooth enamel due to non-bacteriogenic chemical processes.
  7. (medicine) A shallow ulceration or lesion, usually involving skin or epithelial tissue.
  8. (mathematics) In morphology, a basic operation (denoted ⊖); see Erosion (morphology).

Derived terms[edit]

Related terms[edit]





  • IPA(key): /eɾos̺ion/ [e.ɾo.s̺i.õn]
  • Rhymes: -ion
  • Hyphenation: e‧ro‧si‧on



  1. Informal second-person singular feminine (hik), taking third-person singular (hari) as indirect object and third-person singular (hura) as direct object, present imperative form of erosi (to buy).



erosion f (plural erosions)

  1. erosion



erosion (plural erosiones)

  1. erosion (shallow lesion or ulceration)