...A skull of an old bear which I have has molars of whichthe crowns are worn almost smooth from attrition... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...This was the attrition of likeminds, making suggestions to one another, criticising, comparing, andreasoning...
Simon Newcomb 「Side-lights on Astronomy and Kindred Fields of Popular Science」
...The rocks are smoothed with the attrition of thealchemy of years...
Ernest Giles 「Australia Twice Traversed, The Romance of Exploration」
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