noun
intrusion
ihn-TROO-zhuhn
noun
1
An unwelcome entry into a place, situation, or someone's private life.
"The company tightened security after a network intrusion."
"She saw the phone call as an intrusion on her weekend."
2
In geology, molten rock forced into cracks in existing rock, or the rock formed when it hardens there.
"Geologists studied the granite intrusion running through the cliff face."
How to Use Intrusion
Learner’s notesIn plain EnglishAn unwanted entry or interruption — into a place, privacy, or (in geology) into solid rock.
Common pairings
network intrusion
intrusion into privacy
igneous intrusion
Word Forms
intrusions plural
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Etymology
From Medieval Latin intrūsiō, from Latin intrūdō, "to thrust in."