Definition of invade verb from the Oxford Advanced Learner's Dictionary

     

    invade

     verb
    verb
    BrE BrE//ɪnˈveɪd//
     
    ; NAmE NAmE//ɪnˈveɪd//
     
    Verb Forms present simple I / you / we / they invade
    BrE BrE//ɪnˈveɪd//
     
    ; NAmE NAmE//ɪnˈveɪd//
     
    he / she / it invades
    BrE BrE//ɪnˈveɪdz//
     
    ; NAmE NAmE//ɪnˈveɪdz//
     
    past simple invaded
    BrE BrE//ɪnˈveɪdɪd//
     
    ; NAmE NAmE//ɪnˈveɪdɪd//
     
    past participle invaded
    BrE BrE//ɪnˈveɪdɪd//
     
    ; NAmE NAmE//ɪnˈveɪdɪd//
     
    -ing form invading
    BrE BrE//ɪnˈveɪdɪŋ//
     
    ; NAmE NAmE//ɪnˈveɪdɪŋ//
     
    Conflict
     
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  1. 1[intransitive, transitive] to enter a country, town, etc. using military force in order to take control of it Troops invaded on August 9th that year. invade something When did the Romans invade Britain? Wordfinderarmy, artillery, battalion, command, defend, invade, officer, regiment, tactics, weapon See related entries: Conflict
  2. 2[transitive] invade something to enter a place in large numbers, especially in a way that causes damage or confusion Demonstrators invaded the government buildings. As the final whistle blew, fans began invading the field. The cancer cells may invade other parts of the body.
  3. 3[transitive] invade something to affect something in an unpleasant or annoying way Do the press have the right to invade her privacy in this way? You feel tense with worrying thoughts constantly invading your sleep.
  4. see also invasion, invasive
    Word Origin late Middle English (in the sense ‘attack or assault (a person)’): from Latin invadere, from in- ‘into’ + vadere ‘go’.
See the Oxford Advanced American Dictionary entry: invade