dem·​on·​stra·​tion | \ ˌde-mən-ˈstrā-shən How to pronounce demonstration (audio) \

Definition of demonstration

1 : an act, process, or means of demonstrating to the intelligence a demonstration of how to prune a tree : such as
a(1) : conclusive evidence : proof a demonstration of her guilt
(2) mathematics : derivation sense 5
b : a showing of the merits of a product or service to a prospective consumer a vacuum cleaner demonstration
2 : an outward expression or display a demonstration of compassion
3 : a show of armed force
4 : a public display of group feelings toward a person or cause peaceful demonstrations against the government anti-war demonstrations

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Other Words from demonstration

demonstrational \ ˌde-​mən-​ˈstrā-​shnəl How to pronounce demonstrational (audio) , -​shə-​nᵊl \ adjective

Synonyms for demonstration


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Examples of demonstration in a Sentence

I went to a sculpture demonstration last weekend. One of the instructors gave a demonstration of how to prune a tree. Would you mind giving us a demonstration so that we can see how the machine works? He brought along a copy of the software for demonstration. Students took part in several nonviolent demonstrations against the government. The latest tests are a clear demonstration that the vaccine works. Many people sent cards and flowers in demonstration of their sympathy.
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Recent Examples on the Web The winners of the DOE’s demonstration program offer different types of nuclear technologies, providing for more options to guard against failure. Josh Siegel, Washington Examiner, "Trump administration gives $160M to two companies seeking nuclear breakthrough," 13 Oct. 2020 Officer Justin Washam wears a protective sleeve for a bite demonstration. Ashley Remkus |, al, "An ugly secret in Alabama: Police dog attacks," 13 Oct. 2020 And at least two of the men charged Thursday were photographed at the Capitol at an anti-Whitmer demonstration in April. Paul Egan, Detroit Free Press, "Paramilitaries? Terrorists? What should militia groups be called?," 10 Oct. 2020 During Thursday night’s demonstration, police arrested Alvin Cole’s mother, Tracy Cole, and his sisters., "28 arrested in Wisconsin protests over police slaying of teen," 10 Oct. 2020 Their instructor stood at the front of the class, holding an airway demonstration model and asking her students questions about it. Farah Eltohamy, The Arizona Republic, "Butchers, welders and aestheticians require in-person training. Here's how that happens with COVID-19," 9 Oct. 2020 The first any of the public became aware of the concept happened on Jan. 26, 1926, when John Logie Baird gave a demonstration for the British Royal Institution. Kevin Dayhoff,, "Dayhoff: First television in Carroll County? Remembering the ‘thrilling days of yesteyear’," 9 Oct. 2020 Such demonstration projects are getting bigger and appearing in a wider range of industries. Rochelle Toplensky, WSJ, "Hydrogen’s Dirty Little Secret," 8 Oct. 2020 Both became radicalized in Britain, and prosecutors noted they were arrested on Sept. 11, 2001, after taking part in a demonstration cheering the attacks on the World Trade Center and Pentagon. Rachel Weiner, Anchorage Daily News, "Two ISIS militants charged in deaths of James Foley and other American hostages in Syria," 7 Oct. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'demonstration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of demonstration

14th century, in the meaning defined at sense 1

History and Etymology for demonstration

Middle English demonstracioun, borrowed from Anglo-French & Latin; Anglo-French demonstration, demustracioun, borrowed from Latin dēmonstrātiōn-, dēmonstrātiō "action of pointing out, description, explanation" (Late Latin, "deduction, proof"), from dēmonstrāre "to indicate, describe, show" + -tiōn-, -tiō, suffix of verbal action — more at demonstrate

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Time Traveler for demonstration

Time Traveler

The first known use of demonstration was in the 14th century

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Statistics for demonstration

Last Updated

19 Oct 2020

Cite this Entry

“Demonstration.” Dictionary, Merriam-Webster, Accessed 21 Oct. 2020.

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More Definitions for demonstration


How to pronounce demonstration (audio)

English Language Learners Definition of demonstration

: an act of showing someone how something is used or done
: an event in which people gather together in order to show that they support or oppose something or someone
: an act of showing or proving something


dem·​on·​stra·​tion | \ ˌde-mən-ˈstrā-shən How to pronounce demonstration (audio) \

Kids Definition of demonstration

1 : an outward expression (as a show of feelings) a demonstration of affection
2 : an act or a means of showing a cooking demonstration
3 : a showing or using of an article for sale to display its good points
4 : a parade or a gathering to show public feeling


dem·​on·​stra·​tion | \ ˌdem-ən-ˈstrā-shən How to pronounce demonstration (audio) \

Medical Definition of demonstration

: an act, process, or means of demonstrating to the intelligence especially : a proof by experiment a demonstration of the neutralization of an acid by a base

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