The correct answer is Compact Disc Rewritable. CD-RW:Compact Disc-Rewritable is a digital optical disc storage format introduced in 1997. CD-RWs must be erased or blanked before reuse. A CD-RW compact disc can be written, read, erased, and re-written. CD-RWs can sustain fewer rewrites compared to other storage media. CD-RWs, as opposed to CDs, require specialized readers that have sensitive laser optics. Hence, the full form of CR-RW is Compact Disc Rewritable.