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demonstration

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dem⋅on⋅stra⋅tion

  [dem-uhn-strey-shuhn]
Use demonstration in a Sentence
–noun
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.
Origin:
1325–75; ME demonstracioun < L dēmonstrātiōn- (s. of dēmonstrātiō, equiv. to dēmonstrāt(us) (see demonstrate ) + -iōn- -ion

Related forms:
dem⋅on⋅stra⋅tion⋅al, adjective
dem⋅on⋅stra⋅tion⋅ist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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dem·on·stra·tion   (děm'ən-strā'shən)   
n.  

  1. The act of showing or making evident.

  2. Conclusive evidence; proof.

  3. An illustration or explanation, as of a theory or product, by exemplification or practical application.

  4. A manifestation, as of one's feelings.

  5. A public display of group opinion, as by a rally or march: peace demonstrations.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

demonstration 
c.1374, from L. demonstrationem, from demonstrare, from de- "entirely" + monstrare "to point out, show," from monstrum "divine omen, wonder." Meaning "public show of feeling," usually with a mass meeting and a procession, is from 1839. Demonstrative, of persons, in the sense of "characterized by outward expression of feelings" is from 1819.
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: dem·on·stra·tion
Pronunciation: "dem-&n-'strA-sh&n
Function: noun
: an act, process, or means of demonstrating tothe intelligence; especially : a proof by experiment demonstration of the neutralization of an acid by a base>
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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