- One of the rigid disks comprising a hard drive. Such platters rotate at very high speeds, and are coated, usually on both sides, with a material which enables information to be encoded by altering the magnetic polarity of minute portions of the surface of each side of said platters, using read/write heads.
- The rotating disk upon which a phonographic record rests when playing.
- A surface upon which one or more disks or discs rest when playing or awaiting to be played. For example, a rotating tray upon which the discs rest in a multiple CD or DVD player.
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