noun
a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface
• Syn: ↑optical disk
• Hypernyms: ↑memory device, ↑storage device
• Hyponyms: ↑compact disk, ↑compact disc, ↑CD, ↑videodisk, ↑videodisc, ↑DVD
* * *
optical disk or optical disc,
a videodisk using laser beams to record and transmit sounds and images: »
Advantages of the optical disk include the high storage capacity of from 10,000 to 100,000 pages per side and the rapid access time (Harold Borko).
Useful english dictionary. 2012.