- 1 [countable] demonstration (against somebody/something) a public meeting or march at which people show that they are protesting against or supporting someone or something to take part in/go on a demonstration to hold/stage a demonstration mass demonstrations in support of the exiled leader anti-government demonstrations a peaceful/violent demonstration compare march
- 2 (informal demo) [countable, uncountable] an act of showing or explaining how something works or is done We were given a brief demonstration of the computer's functions. a practical demonstration a demonstration model (= a model used to show how something works) We provide demonstrations of videoconferencing over the Internet.
- 3[countable, uncountable] an act of giving proof or evidence for something a demonstration of the connection between the two sets of figures a demonstration of how something that seems simple can turn out to be very complicated
- 4[countable] an act of showing a feeling or an opinion a public demonstration of affection a demonstration of support for the reforms
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