demonstration
noun
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a show or displaypresentation
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a show of military force or preparedness“We confused the enemy with feints and demonstrations.”
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a public display of group feelings (usually of a political nature)“there were violent demonstrations against the war”manifestation
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proof by a process of argument or a series of proposition proving an asserted conclusionmonstrance
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a visual presentation showing how something works“the lecture was accompanied by dramatic demonstrations”demo