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invasion

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noun in·va·sion \in-ˈvā-zhən\

Definition of invasion

  1. 1 :  an act of invading; especially :  incursion of an army for conquest or plunder

  2. 2 :  the incoming or spread of something usually hurtful



Examples of invasion

  1. The enemy launched an invasion.

  2. The people live under a constant threat of invasion.

  3. The town is gearing up for the annual tourist invasion.

  4. protecting the house from insect invasion



Origin of invasion

Middle English invasioune, from Anglo-French invasion, from Late Latin invasion-, invasio, from Latin invadere to invade


First Known Use: 15th century



INVASION Defined for Kids

invasion

play
noun in·va·sion \in-ˈvā-zhən\

Definition of invasion

  1. :  an act of invading




Medical Dictionary

invasion

play
noun in·va·sion \in-ˈvā-zhən\

Medical Definition of invasion

  1. :  the act of invading: asa:  the penetration of the body of a host by a microorganismb:  the spread and multiplication of a pathogenic microorganism or of malignant cells in the body of a host





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