n.
Pronunciation: in- ' trü-zh ə n
Function: noun
Etymology: Middle English, from Anglo-French, from Medieval Latin intrusion-, intrusio, from Latin intrudere
Date: 15th century
1 : the act of intruding or the state of being intruded especially : the act of wrongfully entering upon, seizing, or taking possession of the property of another
2 : the forcible entry of molten rock or magma into or between other rock formations also : the intruded magma