disk

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disk

1. The two-dimensional projection of the surface of a star or planet.
2. See Galaxy; galaxies.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Disk

A flat, circular, raised ornament, carved as a series of disks adjacent to each other.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

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).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

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.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in periodicals archive ?
Slide in a compact disc (CD) or digital versatile disc (DVD).
If a media manufacturer does use cheap adhesives or their stampers (production equipment) don't sandwich the discs thoroughly, there might be some oxidation on the outer edges ...
There is much evidence of his greatness in the early acoustic discs. He did, however, have an annoying habit of overdoing the effect of playing the left hand before the right, as many pianists did during this time.
Fully compliant with the DVD-R General specifications established by the DVD Forum, a single-sided 4.7GB disc provides the same capacity as seven CDs.
CD-ROM XA is a specification that provides guidelines for audio compression and allows the drive to read discs that have the audio, video and other digital data interleaved.
* Audit Reference and Resource Discs (Arthur Andersen & Co., for internal use only).
In PTP discs, both layers read from the inside of the disc to the outside, whereas in an OTP disc the outer layer reads from the inside to out and then back in for the inner layer.
This month, Warner Advanced Media Operations (WAMO) in Olyphant, Pa., is expected to become the first producer of higher-capacity DVD-14 and DVD-18 discs. Whereas current discs hold a maximum of around 10 gigabytes, DVD-14 and 18 will offer close to 14 and 18 gigabytes, respectively.
At present, RIA anticipates including all administrative documents, Tax Court cases, the RIA United States Tax Reporter (formerly P-H/Maxwell Macmillan Federal Taxes 2nd), and various state tax services on the same disc, all cross-referenced to its RIA Federal Tax Coordinator 2d.
About 11 replicators are in stages of DVD start-up, though only three of them are actually sending discs to market.
Compact discs hold 650-700 megabytes of data, movies or music, which puts them on the low end of the capacity-scale when compared with magnetic tape, hard drive, and other data storage options.