avulsion

英[ә'vʌlʃәn]

n. 扯开, 撕脱, 扯离的部分\n[医] 撕脱[法], 抽出术

n. an abrupt change in the course of a stream that forms the boundary between two parcels of land resulting in the loss of part of the land of one landowner and a consequent increase in the land of another\nn. a forcible tearing or surgical separation of one body part from another