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\ ˈmash-ˌəp 
\
\Definition of mash-up
: something created by combining elements from two or more sources: such as
a : a piece of music created by digitally overlaying an instrumental track with a vocal track from a different recording
b : a movie or video having characters or situations from other sources
c : a Web service or application that integrates data and functionalities from various online sources
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Time Traveler for mash-up
The first known use of mash-up was in 1859
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