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demo

[dem-oh] /ˈdɛm oʊ/ Informal.
noun, plural demos.
1.
demonstration (defs 4, 6).
2.
demonstrator (def 5).
3.
a recording of a new song or of one performed by an unknown singer or singing group, distributed to disc jockeys, recording companies, etc., to demonstrate the merits of the song or performer.
4.
demolition (def 1):
He does flooring and demo for a living.
verb (used with object), demoed, demoing.
5.
to try out or exhibit the use of (a product, process, or the like):
You can demo the game without downloading or buying it.
6.
to record (a song) to demonstrate the merits of the song or performer.
Origin of demo
1935-1940
1935-40; by shortening; see -o
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for demoing

demo

/ˈdɛməʊ/
noun (informal) (pl) -os
1.
short for demonstration (sense 4)
2.
  1. a demonstration record or tape, used for audition purposes
  2. a demonstration of a prototype system
3.
(US) short for demonstrator (sense 3)
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
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Word Origin and History for demoing

demo

n.

short for demonstration (tape, disc, etc.). Music recording given out for promotional purposes, 1963. The word was used earlier to mean "a public political demonstration" (1936).

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for demoing

Demo

adjective

: the Dem boss/ Demo congressmen

noun

A Democrat (first form 1840+, second 1793+)

demo

modifier

: Let's try the demo disk

noun

  1. A record or tape made to demonstrate the abilities of musicians, the quality of a song, etc: Mark's got a good demo to pitch the new song with (1950s+)
  2. A computer disk or tape cassette made to demonstrate the abilities of a particular program: I tried out their software demo before I bought their package (1980s+)
  3. A demonstration of protest or other conviction, esp by a large crowd with banners, etc: a no-nukes demo (1936+)
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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