a·bra·sion

[uh-brey-zhuhn]
noun
1.
a scraped spot or area; the result of rubbing or abrading: abrasions on his leg caused by falling on the gravel.
2.
the act or process of abrading.
Origin:
1650–60; < Medieval Latin abrāsiōn- (stem of abrāsiō), equivalent to abrās(us) scraped off (past participle of abrādere; see abrade) + -iōn- -ion

Synonyms
1. sore, scrape, lesion. 2. rubbing, erosion.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
abrasion (əˈbreɪʒən) [Click for IPA pronunciation guide]
 
—n
1.  the process of scraping or wearing down by friction
2.  a scraped area or spot; graze
3.  geography attrition Compare corrasion the effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down
 
[C17: from Medieval Latin abrāsiōn-, from the past participle of Latin abrādere to abrade]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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00:10
Abrasion is always a great word to know.
So is abrade. Does it mean:
to wear off or down by scraping or rubbing.
to suck up or drink in a liquid; soak up:
LEARN MORE UNUSUAL WORDS WITH WORD DYNAMO...
Etymonline
Word Origin & History

abrasion
1650s, from M.L. abrasionem "a scraping," noun of action from L. abrasus, pp. of abradere, from ab- "off" + radere "to scrape" (see raze).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

abrasion a·bra·sion (ə-brā'zhən)
n.

  1. A scraping away of a portion of a surface.

  2. The wearing down or rubbing away or removal of the superficial layers of skin or mucous membrane in a limited area.

  3. The pathological wearing away of tooth substance by mechanical means; grinding.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
abrasion   (ə-brā'zhən)  Pronunciation Key 

  1. The process of wearing away a surface by friction. A rock undergoes abrasion when particles of sand or small pieces of rock are carried across its surface by a glacier, stream, or the wind.

  2. A scraped area on the skin or mucous membranes.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
It's more beautiful to the touch, more stable to light and temperature and
  resistant to abrasion.
It was meant for abrasion on some granite cliff-face, so there's a body armor
  aspect to it.
All partners of academic leaders experience that sort of abrasion in one form
  or another.
Good for granite: breathable, abrasion-resistant stretch nylon and an inseam
  gusset.
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