Abrasion
Pronunciation : Ab*ra"sion
Part of Speech : n.
Etymology : [L. abrasio, fr. abradere. See Abrade.]
Definition : 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.)
Defn: A superficial excoriation, with loss of substance under the form of small shreds. Dunglison.
Source : Webster's Unabridged Dictionary, 1913