I usually use disc, I think. I've never really paid much attention to it though.
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disc
n. & v.
Variant of disk.
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disk also disc
n.
A thin, flat, circular object or plate.
Something resembling such an object: The moon's disk was reflected in the pond.
The disk used in a disc brake.
A disk used on a disk harrow.
A round, flattened, platelike structure in an animal, such as an intervertebral disk.
Botany. The enlarged area bearing numerous tiny flowers, as in the flower head of composite plants, such as the daisy. Also called discus.
Computer Science.
A magnetic disk, such as a floppy disk or hard disk.
The data stored on such a disk: read the disk that came with the manual.
An optical disk, especially a compact disk. See Usage Note at compact disk.
A phonograph record.
A circular grid in a phototypesetting machine.
tr.v. disked, also disced disk·ing, disc·ing disks, discs
To work (soil) with a disk harrow.
To make (a recording) on a phonograph record.
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disc
n. & v.
Variant of disk.
------------------------------
disk also disc
n.
A thin, flat, circular object or plate.
Something resembling such an object: The moon's disk was reflected in the pond.
The disk used in a disc brake.
A disk used on a disk harrow.
A round, flattened, platelike structure in an animal, such as an intervertebral disk.
Botany. The enlarged area bearing numerous tiny flowers, as in the flower head of composite plants, such as the daisy. Also called discus.
Computer Science.
A magnetic disk, such as a floppy disk or hard disk.
The data stored on such a disk: read the disk that came with the manual.
An optical disk, especially a compact disk. See Usage Note at compact disk.
A phonograph record.
A circular grid in a phototypesetting machine.
tr.v. disked, also disced disk·ing, disc·ing disks, discs
To work (soil) with a disk harrow.
To make (a recording) on a phonograph record.
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