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Webster's New World College Dictionary » intrusion
intrusion
intrusion definition
in·trusion (in tro̵̅o̅′z̸hən)
noun
- the act of intruding
- Law the illegal entering upon another's land without right to possession
- Geol.
- the invasion, as of liquid magma, into or between solid rock
- the body of rock resulting from such invasion
Etymology: ME < OFr < ML intrusio < L intrusus: see intrusive
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