A double sided disc comprising a DVD substrate (with DVD-Audio or video data) bonded to a CD substrate (containing CD audio). The CD substrate is usually about 0.9 mm thick so that the overall thickness is about 1.5 mm or less. An alternative name is DVDPlus.
a combination of a CD and a DVD
a two-sided optical media format - one side plays in your DVD player, the other side in a regular CD player