Blu-ray(redirected from SD DVD)
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(Electronics) trademark an optical disk used to store digital information such as high-definition video, and able to store more information than a standard DVD
[C21: from the colour of the laser used to read and write this type of disc]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014