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

     

    dissipate

     verb
    verb
    BrE BrE//ˈdɪsɪpeɪt//
     
    ; NAmE NAmE//ˈdɪsɪpeɪt//
     
    (formal)Verb Forms present simple I / you / we / they dissipate
    BrE BrE//ˈdɪsɪpeɪt//
     
    ; NAmE NAmE//ˈdɪsɪpeɪt//
     
    he / she / it dissipates
    BrE BrE//ˈdɪsɪpeɪts//
     
    ; NAmE NAmE//ˈdɪsɪpeɪts//
     
    past simple dissipated
    BrE BrE//ˈdɪsɪpeɪtɪd//
     
    ; NAmE NAmE//ˈdɪsɪpeɪtɪd//
     
    past participle dissipated
    BrE BrE//ˈdɪsɪpeɪtɪd//
     
    ; NAmE NAmE//ˈdɪsɪpeɪtɪd//
     
    -ing form dissipating
    BrE BrE//ˈdɪsɪpeɪtɪŋ//
     
    ; NAmE NAmE//ˈdɪsɪpeɪtɪŋ//
     
     
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  1. 1[intransitive, transitive] to gradually become or make something become weaker until it disappears Eventually, his anger dissipated. dissipate something Her laughter soon dissipated the tension in the air.
  2. 2[transitive] dissipate something to waste something, such as time or money, especially by not planning the best way of using it synonym squander She was determined to achieve results and not to dissipate her energies.
  3. Word Origin late Middle English: from Latin dissipat- ‘scattered’, from the verb dissipare, from dis- ‘apart, widely’ + supare ‘to throw’.
See the Oxford Advanced American Dictionary entry: dissipate