verb (used with object), at·trit·ed, at·trit·ing.
  1. to make smaller by attrition.

Origin of attrite

1615–25; < Latin attrītus rubbed against, rubbed away, worn away (past participle of atterere), equivalent to at- at- + trī- (variant stem of terere to rub) + -tus past participle suffix
Related formsat·trite·ness, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for attrite

"worn down," 1620s, from Latin attritus, past participle of atterere (see attrition).

Online Etymology Dictionary, © 2010 Douglas Harper