/ əˈbreɪʒn; NAmE / noun ( technical )
1.
[ C ] a damaged area of the skin where it has been rubbed against sth hard and rough :
He suffered cuts and abrasions to the face.
2.
[ U ] damage to a surface caused by rubbing sth very hard against it :
Diamonds have extreme resistance to abrasion.
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WORD ORIGIN
mid 17th cent.: from Latin abrasio(n-) , from the verb abradere to scrape.