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demonstration ( defs 4, 6 ).

demonstrator ( def 5 ).

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.

demolition ( def 1 ):

to try out or exhibit the use of (a product, process, or the like):

to record (a song) to demonstrate the merits of the song or performer.

a member of the Democratic Party; Democrat.

a combining form occurring in loanwords from Greek, where it meant “people” ( democratic ); on this model, used in the formation of compound words ( demography ).