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Grinding

From Biology-Online Dictionary | Biology-Online Dictionary
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Grinding --> abrasion

1. (Science: pathology) The wearing away of a substance or structure (such as the skin or the teeth) through some unusual or abnormal mechanical process.

2. (Science: clinical sign) a superficial injury to the skin or other body tissue caused by rubbing or scraping resulting in an area of body surface denuded of skin or mucous membrane.