demonstration
Americannoun
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the act or circumstance of proving or being proved conclusively, as by reasoning or a show of evidence.
a belief incapable of demonstration.
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something serving as proof or supporting evidence.
They sent a check as a demonstration of their concern.
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a description or explanation, as of a process, illustrated by examples, specimens, or the like.
a demonstration of methods of refining ore.
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the act of exhibiting the operation or use of a device, machine, process, product, or the like, as to a prospective buyer.
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an exhibition, as of feeling; display; manifestation.
His demonstration of affection was embarrassing.
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a public exhibition of the attitude of a group of persons toward a controversial issue, or other matter, made by picketing, parading, etc.
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a show of military force or of offensive operations made to deceive an enemy.
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Mathematics. a logical presentation of the way in which given assumptions imply a certain result; proof.
noun
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the act of demonstrating
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proof or evidence leading to proof
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an explanation, display, illustration, or experiment showing how something works
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a manifestation of grievances, support, or protest by public rallies, parades, etc
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a manifestation of emotion
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a show of military force or preparedness
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maths a logical presentation of the assumptions and equations used in solving a problem or proving a theorem
Other Word Forms
- counterdemonstration noun
- demonstrational adjective
- demonstrationist noun
- predemonstration noun
- redemonstration noun
- subdemonstration noun
- superdemonstration noun
- undemonstrational adjective
Etymology
Origin of demonstration
1325–75; Middle English demonstracioun < Latin dēmonstrātiōn- (stem of dēmonstrātiō, equivalent to dēmonstrāt ( us ) ( demonstrate ) + -iōn- -ion
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Barnum to design an elevator demonstration for the 1853-54 World’s Fair in New York.
From The Wall Street Journal • Apr. 2, 2026
Eighteen people have been arrested on suspicion of supporting Palestine Action after a demonstration outside New Scotland Yard.
From BBC • Mar. 28, 2026
But the cabin has internet, so messages kept coming in about her one-woman No Kings demonstration the prior weekend in Beckley, West Virginia.
From Salon • Mar. 28, 2026
The demonstration downtown is scheduled for Saturday from 2 to 5:30 p.m. at City Hall while 40 other demonstrations are expected throughout the county.
From Los Angeles Times • Mar. 27, 2026
Instead, I sat down on the sofa beside a stack of demonstration posters.
From "The Rock and the River" by Kekla Magoon
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
