Definition of erosion in English:


Line breaks: ero|sion
Pronunciation: /ɪˈrəʊʒ(ə)n


[mass noun]
  • 1The process of eroding or being eroded by wind, water, or other natural agents: the problem of soil erosion
    More example sentences
    • Severe wind and water erosion of the topsoil added to the degradation of the natural habitats, particularly on upland sites.
    • Wind and water erosion remove the most valuable part of the soil, the organic-rich upper horizon.
    • Most of Mars' surface was shaped later by meteorite impacts, volcanic eruptions and erosion by dust and wind.
  • 1.1The gradual destruction or diminution of something: the erosion of support for the party
    More example sentences
    • The metaphors of the loss, diminution, or erosion of state power can misrepresent this reconfiguration.
    • He then traced the gradual erosion of the conventions that had supported religious practice in Ireland.
    • The representative from the Chamber of Commerce warned of a loss of passing trade, the threat to business and the gradual erosion of the city centre due to the lower overheads of out-of-town retail parks.
  • 1.2 Medicine The gradual destruction of tissue or tooth enamel by physical or chemical action: the total area of haemorrhagic erosion
    More example sentences
    • Teeth may be damaged by dental caries, trauma, erosion, attrition, and abrasion or lost through periodontal disease.
    • Frequent vomiting can cause retention of stomach acids in the mouth in turn leading to erosion of the tooth enamel.
    • A striking morphologic finding was a topographical relation of focal inflammation with sclerotic atrophy in areas with erosion of the epithelium.
  • 1.3 [count noun] Medicine A place where surface tissue has been gradually destroyed: patients with gastric erosions
    More example sentences
    • The most commonly missed upper gastrointestinal lesions are erosions in large hiatal hernias, arteriovenous malformations, and peptic ulcers.
    • Local tissue reactions were confined to the treatment site and included erythema, swelling, desquamation, erosions, and eschar in most patients.
    • Skin lesions present initially as bullae, which then rupture, leaving slow-healing erosions and crusted lesions.



More example sentences
  • Despite this bombardment, all ring moons have erosional lifetimes that exceed the solar system's age.
  • The trail sliced up through an erosional landscape of mesas and deep gorges where the bird life was stunning.
  • Over millions of years the erosional processes caused by wind and waves have shaped this sequence of rocks.


More example sentences
  • People experience degrees of severity ranging from only symptoms to erosive esophagitis that damages your esophagus.
  • Her use of both additive and erosive techniques - like oil paint overlays and sanding away to reveal a hint of wood beneath - - add to the ambiguity of the final effect, suggesting the mystery of elements just out of sight.
  • Half a million visitors a year have taken their toll on the place, defiling the green shores and slopes of Walden Pond through the erosive effect of their activity.


mid 16th century: via French from Latin erosio(n-), from erodere 'wear or gnaw away' (see erode).

More definitions of erosion

Definition of erosion in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day astrogation
Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
(in science fiction) navigation in outer space