counterinvasion

noun coun·ter·in·va·sion \ ˌkau̇n-tər-in-ˈvā-zhən \
variants: or counter-invasion

Definition of counterinvasion

plural counterinvasions or counter-invasions
: an invasion that is undertaken by a defending force against an enemy invader
  • Even border fortifications can permit an attacker to mass forces for invasion while allocating few forces to defend the fortified border against a counterinvasion.
  • —James M. Garrett

First Known Use of counterinvasion

1845

in the meaning defined above

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