I. dem ‧ o 1 /ˈdeməʊ $ -moʊ/ BrE AmE noun ( plural demos ) [countable]
[ Date: 1900-2000 ; Origin: demonstration ]
1 . a recording containing an example of someone’s music that is sent to a record company so that they can decide whether to produce it or not:
a demo tape
2 . British English informal an event at which a large group of people publicly protest about something SYN demonstration :
pro-independence demos
3 . an explanation of how something works SYN demonstration
4 .
a) American English an example of a product that is used to show what it is like or how it works:
demo homes on the new development
b) a computer program that shows what a new piece of software will be able to do when it is ready to be sold:
Click here to download a demo of the new version of our personal finance software.
II. demo 2 BrE AmE verb [transitive] informal
to show or explain how something works or is done, especially new computer equipment SYN demonstrate :
They’re going to demo some of the new software at this year’s Mac convention.