Ab‐ra″sion (�), n. [L. abrasio, fr. abradere. See Abrade.] 1. The act of abrading, wearing, or rubbing off; the wearing away by friction; as, the abrasion of coins.
2. The substance rubbed off. Berkeley.
3. (Med.) A superficial excoriation, with loss of substance under the form of small shreds. Dunglison.