Word Origin & History
attrition
1543, "abrasion, a scraping," from L. attritionem (nom. attritio), lit. "a rubbing against," noun of action from attritus pp. of atterere "to wear, rub away," from ad- "to" + terere "to rub." The earliest sense in Eng. is from Scholastic theology (c.1374), "sorrow for sin merely out of fear of punishment," a minor irritation, and thus less than contrition. The sense of "wearing down an enemy's strength" is a World War I coinage (1914). Attrit (v.) was a 1956 U.S. Air Force back-formation, which attained currency during the Vietnam War. (A 17c. attempt at a verb produced attrite).