\ˈde-(ˌ)mō \
plural demos

Definition of demo 

(Entry 1 of 3)

1 capitalized : democrat sense 2

3a : demonstrator sense a

b : a recording intended to show off a song or performer to a record producer

c : an example of a product that is not yet ready to be sold a demo version of the software


demoed also demo'd; demoing also demo'ing; demos

Definition of demo (Entry 2 of 3)

transitive verb

1 : to give a demonstration of (something, such as a product or procedure) : to show how (something) works, is prepared, or is done The chef demoed everything. His first demo was peeling a carrot.— Michael Ruhlman One dealer didn't even have demonstration software; the only thing he could demo was the power light.Video Magazine

2 : demolish My mom put little masks on me and my brother, gave us goggles and crowbars, and we demo'd the walls.— Matt Damon Brick salvaged from a demoed fireplace and backyard path make up the new stoop and walkway.— Natalie Rodriguez

3 : to create a demo (see demo entry 1 sense 3b) recording of (a piece of music) … spent three months rehearsing and demoing songs for their third album …— David Fricke

4 : to use (something, such as a product) in order to test its quality or value : to try out (something) The surest way to pick exactly the right ski for your needs is to first narrow your choices to a workable number … and then go out and demo three or four pairs to make your final selection.— Bill Grout

variants: or before vowels dem-

Definition of demo- (Entry 3 of 3)

: people : populace : population demography demonym

Examples of demo in a Sentence


She will be showing a demo of the company's new alarm system. a demo version of the software I saw a demo on how to use the computer program. The salesman gave us a demo of the vacuum cleaner, and it seemed to work very well. They sent the demo to several record companies. She cut a demo last week.
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Recent Examples on the Web: Noun

The Hulk demo within the sprawling, 930-square-meter S.T.A.T.I.O.N. exhibit begins with an actual MRI scan of a human brain that represents Banner’s gray matter. Larry Greenemeier, Scientific American, "Marvel Comics Gets Inside the Heads of the Avengers," 21 Aug. 2014 Back in 2013, a certain hydrophobic sealant called Ultra-Ever Dry swept through a niche portion of the Internet thanks to what seemed like a too-good-to-be-true demo video that went viral. Lee Hutchinson, Ars Technica, "The Internet-demanded, partially scientific testing of Ultra-Ever Dry (in HD!)," 4 July 2018 But testing and development of the new COPVs is complete, and the new hardware will be on board when SpaceX launches its first commercial crew demo flight, currently scheduled for this August. Amy Thompson, WIRED, "SpaceX Is About to Launch Its Final Block 4 Falcon," 28 June 2018 Explore the blueprint room to relive some of the show’s most exciting moments, test your hypothesis in the workshop and catch a live demonstration onstage on the demo stage, with multiple shows throughout the day. Emily Sorensen, Pomerado News, "Museums offers family-friendly activities this summer," 27 June 2018 Green's demo had been taped over the original recording, and Meaux wanted to find that original singer. Andrew Dansby, Houston Chronicle, "Empress of Gulf Coast Soul Barbara Lynn receives NEA honor," 20 June 2018 Debate topics at the San Francisco demo included space exploration and telemedicine. Fox News, "IBM computer taps AI to successfully debate humans," 19 June 2018 On Fridays from noon to 1 p.m. a series of cooking demonstrations are scheduled for Elaine's Kitchen, a demo kitchen on the Race Street Esplanade. Polly Campbell,, "Get to know Findlay Market merchants at Findlay Eats this summer," 13 June 2018 On Saturday and Sunday, a tomato eating contest will be held at the food demo stage, with contestants eating Ben & Ben Becnel's fresh harvest. Ann Maloney,, "Creole Tomato Festival: Vine-ripened bites, sips fill the French Quarter," 5 June 2018

Recent Examples on the Web: Verb

Last week, Oprea posted an Instagram video of herself demoing an eight-part, equipment-free workout that targets this muscle group from all angles. Jenny Mccoy, SELF, "A Quick Equipment-Free Butt Workout From Celebrity Trainer Erin Oprea," 27 June 2018 In the video, Bure and Stokes wear looped resistance bands around their ankles and demo the moves with inspiring synchronization and enthusiasm. Jenny Mccoy, SELF, "Candace Cameron Bure's Lower-Body Circuit Will Strengthen Your Glutes, Hips, and Thighs," 15 Mar. 2018 The company demoed the new Google News during the I/O keynote, showing off many features in mobile-app form. Valentina Palladino, Ars Technica, "Google News gets Material Design look, better personalization with AI," 8 May 2018 More experienced riders can check out and demo top bikes from Trek, also for rent. Mary Forgione,, "After 220 days, Mammoth Mountain's winter ski season comes to a close," 12 June 2018 Memoji was just one of the new immersive features demoed Monday. Arielle Pardes, WIRED, "Tech Addiction and the Paradox of Apple's 'Screen Time' Tools," 5 June 2018 Craig Federighi, Apple’s senior vice president of software engineering, demoed how the new ARKit 2 platform has improved tracking capabilities so that coders can build apps that can more realistically detail the real world. Jonathan Vanian, Fortune, "Apple Just Debuted Powerful New Augmented Reality Features," 4 June 2018 The organization tallied the numbers in advance of JPMorgan Chase Bank's plans to demo the former Union Carbide Building, built in 1960 at a height of 215.5 meters, in New York to make way for a new headquarters. Katherine Feser, Houston Chronicle, "3 Houston buildings among world's tallest to have been torn down," 31 May 2018 Currently, a select group of users have been demoing Waymo's self-driving ride hailing service, but the company plans to open it to the public in the Arizona city laster this year. Marco Della Cava, USA TODAY, "Waymo will add up to 62,000 FCA minivans to self-driving fleet," 31 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'demo.' 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 demo


1793, in the meaning defined at sense 1


1969, in the meaning defined at sense 1

History and Etymology for demo


by shortening

Combining form

combining form from Greek dêmos "district, country, people, common people, political district in Attica," of uncertain origin

Note: Greek dêmos has traditionally been linked with Old Irish dám "guests, company, retinue," Old Welsh dauu, glossing Latin cliens (hence, presumably, "member of a retinue"), Modern Welsh daw, dawf "son-in-law." However, the semantic discrepancy between the two etyma is significant, and Celtic *dāmo-/*dāmā- has more recently been explained as going back to *dōmo-, a lengthened-grade adjectival derivative of Indo-European *dom-o-s, "house, household." The further traditional link with Indo-European *deh2- "cut, divide" (whence Greek daíomai, daíesthai "to divide"; cf. tide entry 1), assuming a noun *deh2-mos meaning originally "part, division," is still possible, though it would be deprived of any support beside Greek.

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Statistics for demo

Last Updated

19 Oct 2018

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Time Traveler for demo

The first known use of demo was in 1793

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