different between erosion vs corrasion

English

Etymology

From Middle French erosion, from Latin ?r?si? (“eating away”), derived from ?r?d?.

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."

Pronunciation

• (General American) IPA^(key): /???o???n/
• (Received Pronunciation) IPA^(key): /???????n/

Noun

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.
   • 1995, Graham Linehan & al., "Good Luck, Father Ted", Father Ted Series 1, Episode 1, Channel Four:

     Father Ted: The cliffs were gone? How could they just disappear?
     Dougal: Erosion.

   • 2012, George Monbiot, Guardian Weekly, August 24, p.20

     Even second-generation biofuels, made from crop wastes or wood, are an environmental disaster, either extending the cultivated area or removing the straw and stovers which protect the soil from erosion and keep carbon and nutrients in the ground.

2. (uncountable) The changing of a surface by mechanical action, friction, thermal expansion contraction, or impact.
3. (uncountable, figuratively) 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
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

Related terms

• erode

Translations

Anagrams

• Reinoso

Basque

Pronunciation

• IPA^(key): /e.?o.s?i.on/

Verb

erosion

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.

Friulian

Noun

erosion f (plural erosions)

1. erosion

Interlingua

Noun

erosion (plural erosiones)

1. erosion (shallow lesion or ulceration)

English

Etymology

Ultimately from Latin corrasus, past participle of corradere (“to scrape together”), itself from cor- (“form of con- (“together”)”) + radere (“to scratch, scrape”).

Noun

corrasion (usually uncountable, plural corrasions)

1. (obsolete) The diminution of wealth, etc., such as through unanticipated expenditure.
2. The wearing away of surface material.
   • 1991, Carlton E. Brett, Yvette L. Bordeaux, Taphonomy of brachiopods from a Middle Devonian shell bed, D. I. MacKinnon, Daphne E. Lee, J. D. Campbell (editors), Brachiopods Through Time, page 221:

     In contrast, Spinocyrtia pedicle valves displayed a wide range of corrasion states, including extremely worn partial valves lacking any hint of ribbing and with edges, including fractured edges, rounded (Figs. 1, 2 B-E).

   • 2000, Janet D. Hughes, Conservation Investigation for Preservation of Historic Timber Hut in Antarctica, Stephen J. Kelley (editor), Wood Structures: A Global Forum on the Treatment, Conservation, and Repair of Cultural Heritage, American Society for Testing and Materials, page 278:

     Accurate data on the rate of corrasion would be very helpful in determining whether treatment is an urgent priority.

     Overstatement of corrasion is largely due to the assumption that the height of nails above the timber surface indicate^[sic] the extent of erosion of the wood surface.

   • 2001, Tree Ring Research, Volumes 57-60, Tree-Ring Society, page 13:

     Following the healing process, hail injuries remain distinctive in the growth rings as corrasions or scars and can be dated with dendrochronological and wood-anatomical methods.

3. (geology) Corrading (erosion by abrasion) caused by such as: wind-blown or water-borne sand, stream-borne or glacier-borne stones, or collisions between stones under the influence of seaside breakers.
   • 1880, Proceedings, Volume 18, American Philosophical Society, page 311:

     But the character of the deposit on these benches shows that it could not have accumulated under such conditions as must have existed had the plains resulted from lateral corrasions by streams with but slight fall.

   • 1993, Shatrughna Prasad Sinha, Faguni Ram, Manager Prasad, Hari Ram Nagalia (editors), Instant Encyclopaedia of Geography, Volume 8: Environmental Geography, Mittal Publications, page 104:

     Corrasion may be vertical or lateral. Vertical corrasion is corrasion of the bed of the river, deepening its channel. Lateral corrasion is corrasion of the banks, and leaves the bed untouched.

Related terms

• corrade
• corrasive

See also

• corrode
• rasion
• razor

Further reading

• Erosion on Wikipedia.Wikipedia

French

Etymology

Ultimately from Latin corrasus, the past participle of corradere (“to scrape together”), itself from cor- (a form of con- 'together') + radere (“to scratch, scrape”).

Noun

corrasion f (plural corrasions)

1. The wear and tear effectuated by the erosive sand-loaded desert winds

Related terms

• corrosion
• corroder
• raser