abrasion

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abrasion

Geography the effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down

abrasion

[ə′brā·zhən]
(engineering)
The removal of surface material from any solid through the frictional action of another solid, a liquid, or a gas or combination thereof.
A surface discontinuity brought about by roughening or scratching.
(geology)
Wearing away of sedimentary rock chiefly by currents of water laden with sand and other rock debris and by glaciers.
(medicine)
A spot denuded of skin, mucous membrane, or superficial epithelium by rubbing or scraping.

abrasion

A surface discontinuity caused by roughening or scratching.
References in periodicals archive ?
Therefore, an effort has been made to assess the different aspects of dental abrasion that is its frequency, arch and pattern dominancy and severity.
Heavy dental abrasion indicates that Ganlea megacanina used its enlarged canine teeth to pry open the hard exteriors of tough tropical fruits in order to extract the nutritious seeds contained inside.
Other oral pathologies in XLHR reported in the literature include dental abrasion and periodontal disease [Pereira et al., 2004], absent or poorly defined lamina dura [Larmas et al., 1991], taurodontism and ectopic eruption of permanent canines [Seow et al., 1995].