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Evulsion (noun)
The action of forcibly pulling something out.
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Avulsion (noun)
The loss or separation of a body part, either by surgery or due to trauma
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Avulsion (noun)
An abrupt change in the course of a river, typically from one channel to another
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Avulsion (noun)
Movement of soil during a flood, or during a change in the course of a river, especially when a resulting change of land ownership is involved
Wiktionary