invasion - definition and synonyms

 
 
noun [countable/uncountable] 

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/ɪnˈveɪʒ(ə)n/
singularinvasion
pluralinvasions
  1. 1
    an occasion when one country’s army goes into another country to take control of it by force

    the Roman invasion of Britain under Julius Caesar

    an invasion force

  2. 2
    a situation in which a large number of people or things come to a place at the same time, especially in an annoying way

    The shops prepared for an invasion of last-minute Christmas shoppers.

    invasion of:

    the annual summer invasion of tourists

  3. 3
    medical the movement of a disease or of the cells that cause it from one area to another
    invasion of:

    an invasion of cancer cells