attritionn.[L. attritio: cf. F. attrition.]1. The act of rubbing together; friction; the act of wearing by friction, or by rubbing substances together; abrasion.()Effected by attrition of the inward stomach. (Arbuthnot.)2. The state of being worn.(Johnson.)3. (Theol.) Grief for sin arising only from fear of punishment or feelings of shame. See Contrition.(Wallis.)