Open English Wordnet
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Nouns
(n)
invasion
the act of invading; the act of an army that invades for conquest or plunder
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(n)
invasion
,
encroachment
,
intrusion
any entry into an area not previously occupied
“an invasion of tourists”
,
“an invasion of locusts”
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(n)
invasion
(pathology) the spread of pathogenic microorganisms or malignant cells to new sites in the body
“the tumor's invasion of surrounding structures”
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