BD may refer to any of the following:
1. Short for Blu-ray disc, BD or BD-ROM, is an optical disc format developed by thirteen consumer electronics and PC companies. These companies include Dell, Hitachi, Hewlett Packard, LG, Mitsubishi, Panasonic, Sony, and TDK. Blu-ray was first introduced at the CES on January 4, 2006, and can store up to 25 GB single-layer disc and 50 GB on a dual-layer disc, each disc being the same size as a standard CD. The picture shows a blue laser in a Blu-ray disc player.
What did the Blu-ray replace?
Can a Blu-ray player read a DVD and CD?
Yes. A Blu-ray player can read Blu-ray discs, DVDs, and CDs.
Can a DVD player read a Blu-ray disc?
No. Blu-ray is the newer, more advanced technology, a DVD player cannot read a Blu-ray disc.
2. BD is also chat slang for a big deal.