Wearing. grinding. or rubbing away by friction

Merriam-Webster Online Dictionary
abrasion (noun)
a) a wearing, grinding, or rubbing away by friction
b) - irritation
an area of the skin or mucous membrane - abraded
abrasion (Wikipedia)

Abrasion may refer to:

  • Abrasion (medical), a wound consisting of superficial damage to the skin
  • Abrasion (dental), the loss of tooth structure by mechanical forces from a foreign element
  • Abrasion (geology), mechanical scraping of a surface by friction between moving particles
  • Abrasion (mechanical), The effect of an abrasive: scratches, removal of surface, etc.
  • Abrasion coast, a coastline that is characterised by the removal (abrasion) of material, typically resulting in sea clis
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