disk


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Related to disk: disc

disk

1. The two-dimensional projection of the surface of a star or planet.
2. See Galaxy; galaxies.

Disk

A flat, circular, raised ornament, carved as a series of disks adjacent to each other.

disk

[disk]
Also spelled disc.
(astronomy)
A relatively thin layer of material distributed in the central plane of a spiral galaxy, in contrast to the nucleus or halo.
(biology)
Any of various rounded and flattened animal and plant structures.
(computer science)
A rotating circular plate having a magnetizable surface on which information may be stored as a pattern of polarized spots on concentric recording tracks. Also known as magnetic disk.
(engineering acoustics)
(mathematics)
The region in the plane consisting of all points with norm less than 1 (sometimes less than or equal to 1).

disk

(storage)
1. magnetic disk.

2. compact disc.

3. optical disk.

Note: the american spelling, "disk", is normal for most computer disks whereas "compact disc", having come to computers via the audio world, is correctly spelled with a "c", indeed, this spelling is part of the CD standard.

disk

A direct access storage device. See floppy disk, hard disk, magnetic disk, optical disc, CD-ROM and DVD.


Disk and Memory Work Together
On the disk, data are stored in sectors, which hold a chunk of data (typically 512 bytes) and are the smallest unit that can be read or written. Memory is broken up into squares like a checkerboard, each square holding one byte. The contents of any single byte or group of bytes can be calculated, compared and copied independently. That is how fields are put together to form records and broken apart when read back in.
References in classic literature ?
And, suddenly seized with fresh anxiety, he moved the little red disk of his lantern over the walls.
He could not have told you what warrant he had for talking about mysteries; if it had been his habit to express himself in poetic figures he might have said that in observing Madame de Cintre he seemed to see the vague circle which sometimes accompanies the partly-filled disk of the moon.
Dim was its little disk, and angel eyes Alone could see the phantom in the skies, When first Al Aaraaf knew her course to be Headlong thitherward o'er the starry sea - But when its glory swell'd upon the sky, As glowing Beauty's bust beneath man's eye,
If there was a lever to be pulled on the disk, very likely it was rusted and refused to give unless he yanked until he was short of breath and his heart beat fast; four horses were so unruly and hard to keep in place; the gates were all so heavy--they were not easy to lift and then drag open.
It was a sort of tripod supporting a large disk like the round top of a table tipped sideways, and it was not until they had dropped on to the lawn and walked across to look at it that March realized that it was a target.
The tip was guarded by a disk of cork which we found beside his body," said the Inspector.
Jo stands amazed in the disk of light, like a ragged figure in a magic-lantern, trembling to think that he has offended against the law in not having moved on far enough.
If a disk stops on a chalk line, it does not count anything.
There were five or six of these mansions on the quay, from the house of Lorraine, which shared with the Bernardins the grand enclosure adjoining the Tournelle, to the Hôtel de Nesle, whose principal tower ended Paris, and whose pointed roofs were in a position, during three months of the year, to encroach, with their black triangles, upon the scarlet disk of the setting sun.
The brilliant disk fascinated and allured me; my eyes became fixed, and I could hardly breathe.
An eccentric disk upon the inside face of the door engaged a slot in the frame when it was desired to secure the door against intruders.
4) Earth, in the cosmology of Hesiod, is a disk surrounded by the river Oceanus and floating upon a waste of waters.