optical disc

noun

variants or optical disk
plural optical discs or optical disks
: 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
The PS5 is available in two versions. … At this point, people are happy to get their hands on either one, but if you don't have a library of optical discs—for Blu-ray movies, used games or old PS4 games—CNET recommends that you go with the $400 version. Dave Johnson

Examples of optical disc in a Sentence

Recent Examples on the Web
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Also, magnetic tape is manufactured in Japan as are many of the optical discs. Thomas Coughlin, Forbes.com, 17 Apr. 2025 Sony and Panasonic both introduced optical disc library systems using their AD technology. Thomas Coughlin, Forbes, 11 Dec. 2024

Word History

First Known Use

1957, in the meaning defined above

Time Traveler
The first known use of optical disc was in 1957

Cite this Entry

“Optical disc.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/optical%20disc. Accessed 23 Apr. 2025.

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