Definition of optical disk
: a disk with a plastic coating on which information (such as music, visual images, or computer data) is recorded digitally (as in the form of tiny pits) and which is read by using a laser
First Known Use of optical disk
OPTICAL DISK Defined for English Language Learners
Definition of optical disk for English Language Learners
: a computer disk on which information is recorded in a way that can be read by a laser
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