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demonstration

American  
[dem-uhn-stray-shuhn] / ˌdɛm ənˈstreɪ ʃən /

noun

  • demonstrations
    plural
  1. the act or circumstance of proving or being proved conclusively, as by reasoning or a show of evidence.

    a belief incapable of demonstration.

  2. something serving as proof or supporting evidence.

    They sent a check as a demonstration of their concern.

  3. a description or explanation, as of a process, illustrated by examples, specimens, or the like.

    a demonstration of methods of refining ore.

  4. the act of exhibiting the operation or use of a device, machine, process, product, or the like, as to a prospective buyer.

  5. an exhibition, as of feeling; display; manifestation.

    His demonstration of affection was embarrassing.

  6. a public exhibition of the attitude of a group of persons toward a controversial issue, or other matter, made by picketing, parading, etc.

  7. a show of military force or of offensive operations made to deceive an enemy.

  8. Mathematics. a logical presentation of the way in which given assumptions imply a certain result; proof.


demonstration British  
/ ˌdɛmənˈstreɪʃən /

noun

  1. the act of demonstrating

  2. proof or evidence leading to proof

  3. an explanation, display, illustration, or experiment showing how something works

  4. a manifestation of grievances, support, or protest by public rallies, parades, etc

  5. a manifestation of emotion

  6. a show of military force or preparedness

  7. maths a logical presentation of the assumptions and equations used in solving a problem or proving a theorem

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of demonstration

1325–75; Middle English demonstracioun < Latin dēmonstrātiōn- (stem of dēmonstrātiō, equivalent to dēmonstrāt ( us ) ( see demonstrate) + -iōn- -ion

Explanation

A demonstration is a show, or display. If you are against war, you might go to an anti-war demonstration in front of the White House. You might need to see a demonstration of napkin folding before you take a job as a waitress. Dressing well for a job interview and showing up on time is considered a demonstration of your seriousness about the job. Crying is a demonstration of your feelings. If you sell website design you can make a demonstration site, or demo, so clients can see what they would get if they hired you.

Keep Reading on Vocabulary.com

Vocabulary lists containing demonstration

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.

See Examples For:

During one of Musk’s visits in 2016, Brown watched in panic as Musk savaged a demonstration from a legendary researcher.

From The Wall Street Journal ● Oct. 9, 2026

A robot that impresses in a demonstration still has to work reliably for enough hours to justify its price and upkeep.

From MarketWatch ● Oct. 8, 2026

Intentionally or not, then, John’s ultimate choice to let Noah live and keep Kerry’s culpability in Hal’s death a secret is a demonstration of empathy’s bravery.

From Salon ● Oct. 5, 2026

Pacific Link is "a demonstration of the power of Canada", said Carney, speaking from Fort McMurray, Alberta, when asked if he had a message for the province.

From BBC ● Oct. 1, 2026

She doesn’t have to say any more for me to understand the meaning of her demonstration.

From "Red Flags and Butterflies" by Sheryl Azzam

The incident sparked demonstrations across the city, including a Friday march from Foley Square to federal immigration offices in Manhattan.

From Salon ● Oct. 10, 2026

Abhijeet Dipke, the founder of the Cockroach party posted a video of himself and fellow protest leaders being taken into custody on their arrival at New Delhi’s airport to join the demonstrations.

From The Wall Street Journal ● Oct. 10, 2026

Police are investigating the demonstrations in a "large-scale" criminal inquiry.

From BBC ● Oct. 6, 2026

Several children have been seriously injured during protests in France, as high school pupils demand better conditions and police crack down on their demonstrations.

From Barron's ● Oct. 6, 2026

“We’re trick-or-treating. Trick-or-treating is for candy and demonstrations are for things like Peace and Freedom. It’s different.”

From "The Egypt Game" by Zilpha Keatley Snyder

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