Last Updated
：2025/11/24
optical disc
（ plural ）
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A modern data storage medium consisting of a flat disc read mechanically by illumination with laser light. Formats include the Laserdisc, compact disc, DVD, and Blu-ray.
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optical disc
After cleaning the optical disc, she carefully placed it back into its protective case to prevent scratches.
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After cleaning the optical disc, she carefully placed it back into its protective case to prevent scratches.
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