First Known Use: 15th century
Dictionary
invasion
noun in·va·sion \in-ˈvā-zhən\
Definition of INVASION
1
: an act of invading; especially : incursion of an army for conquest or plunder
2
: the incoming or spread of something usually hurtful
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Origin of INVASION
Middle English invasioune, from Anglo-French invasion, from Late Latin invasion-, invasio, from Latin invadere to invade
Rhymes with INVASION
INVASION Defined for Kids
invasion
noun in·va·sion \in-ˈvā-zhən\
Definition of INVASION for Kids
: an act of invading
Medical Dictionary
invasion
noun in·va·sion \in-ˈvā-zhən\
Medical Definition of INVASION
: the act of invading: as a : the penetration of the body of a host by a microorganism b : the spread and multiplication of a pathogenic microorganism or of malignant cells in the body of a host
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