- A digital magnetic storage medium, which is usually in the form of a rotating round plate. Information is encoded by altering the magnetic polarity of minute portions on the surface of such a disk. Magnetic disks may be recorded, erased, and rerecorded many times, and the most common formats are hard disks, floppy disks, and removable hard disks. Also spelled magnetic disc. Also called disk(1).
- synonym magnetic disc
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