demo

[dem-oh]Informal.
noun, plural dem·os.
  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), dem·oed, dem·o·ing.
  1. to try out or exhibit the use of (a product, process, or the like): You can demo the game without downloading or buying it.
  2. to record (a song) to demonstrate the merits of the song or performer.

Origin of demo

1935–40; by shortening; see -o
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for demoed

demo

noun plural -os informal
  1. short for demonstration (def. 4)
    1. a demonstration record or tape, used for audition purposes
    2. a demonstration of a prototype system
  2. US short for demonstrator (def. 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

Word Origin and History for demoed

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