Definition of demonstrate verb from the Oxford Advanced American Dictionary

        

    demonstrate

     verb
    verb
    NAmE//ˈdɛmənˌstreɪt//
     
    Verb Forms present simple I / you / we / they demonstrate
     
    he / she / it demonstrates
     
    past simple demonstrated
     
    -ing form demonstrating
     
     
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  1. 1[transitive] to show something clearly by giving proof or evidence demonstrate that… These results demonstrate convincingly that our campaign is working. demonstrate something (to somebody) Let me demonstrate to you some of the difficulties we are facing. demonstrate how, what, etc… His sudden departure had demonstrated how unreliable he was. demonstrate somebody/something to be something The theories were demonstrated to be false. it is demonstrated that… It has been demonstrated that this drug is effective. Language Bankevidencegiving proof New evidence has been found that/Studies have shown that TV advertising influences what children buy. It is clear from numerous studies that TV advertising influences what children buy. Recent research demonstrates that TV advertising influences children's spending habits. Many parents think that TV advertising influences their children. This view is supported by the findings of a recent study, which show a clear link between television advertisements and children's spending habits. The findings also reveal that most children are unaware of the persuasive purpose of advertising. Little evidence has been found that children understand the persuasive intent of advertising. The results contradict claims that advertising is unrelated to children's spending habits. Manufacturers argue that it is difficult to prove that advertising alone influences what children buy.
  2. 2[transitive] demonstrate something to show by your actions that you have a particular quality, feeling or opinion synonym display You need to demonstrate more self-control. We want to demonstrate our commitment to human rights.
  3. 3[transitive] to show and explain how something works or how to do something demonstrate something (to somebody) Her job involves demonstrating new educational software. demonstrate (to somebody) how, what, etc… Let me demonstrate to you how it works.
  4. 4[intransitive] to take part in a public meeting or march, usually as a protest or to show support for something synonym protest demonstrate (against something) students demonstrating against the war demonstrate (in favor/support of something) They are demonstrating in favor of free higher education.
See the Oxford Advanced Learner's Dictionary entry: demonstrate