Avulsion

n. tearing away; tissue which has been torn (Medicine)

Avulsion in general refers to a tearing away. Specifically, it can refer to: A form of amputation where the extremity is pulled off rather than cut off.Avulsion fractureIn the law (also real estate, geology), "avulsion" refers to the sudden loss of land by the action of water.
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Avulsion /avul·sion/ the tearing away of a structure or part. a·vul·sion n. The forcible tearing away of a body part by trauma or surgery. [more]Avulsion - Community and Resources

Noun
1. 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
(hypernym) change, alteration, modification
2. a forcible tearing or surgical separation of one body part from another
(hypernym) separation
(derivation) avulse

n. avulsion, tissue which has been torn (Medicine)