bitcoin

1. (Computer Science) (usually capital) a system of open source peer-to-peer software for the creation and exchange of (payment in) a certain type of cryptocurrency; the first such system to be fully functional

2. (Currencies) (sometimes capital) the cryptocurrency created and exchanged using this software

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Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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