a thin flat round piece of plastic that stores information such as music or written words that can be read using a laser (=powerful narrow light). Optical disks include CD-ROMs and laserdiscs.
Synonyms and related words
Computer memory and data storage devices
blu-ray
boot disk
buffer
optical disk
noun countable computing
US
Word Forms
singular
optical disk
plural
optical disks
DEFINITIONS1
1
a thin flat round piece of plastic that stores information such as music or written words that can be read using a laser (=powerful narrow light). Optical disks include CD-ROMs and laserdisks.