Discover

A 'disc' or 'disk' generally refers to a round flat object, although the usage varies between different variants of English (see spelling of disc for the origin of the two spellings and regional differences^[1]). Common types of disc include:

★ Flying disc or, more specifically, a Frisbee, a disk-shaped toy

★ Intervertebral disc, in the spines of vertebrates

★ Parking disc, or parking disc machine

★ Disk (mathematics), see also Unit disk

★ Tax disc, a vehicle licence

★ Disc brake
The spelling ''disc'' is commonly used for audio and video recording media, including:

★ Transcription disc (gramophone record or "phonograph record" in U.S. English)

★ Aluminum disc

★ Optical disc, the most common of which are:

★
★ Compact Disc

★
★ Digital Versatile Disc or Digital Video Disc (DVD)

★ Disc film
The spelling ''disk'' (sometimes viewed as an abbreviation of ''diskette'') is used for magnetic recording media (see disk storage), including:

★ Hard disk, also known as a ''hard drive''

★ Floppy disk, or ''diskette''

★ RAM disk

★ Also (perhaps erroneously) to refer to tape drives and flash memory cards for both music and computer data
The spelling "disk" is also used in science, such as

★ Accretion disk, in astrophysics

★ Protoplanetary disk

★ Debris Disk
''DISC'' can stand for:

★ The DISC assessment (or personal profile system), a psychological test

★ DISCs - ''Domestic International Sales Corporations'' in US law

★ Death Inducing Signaling Complex
''DISK'' can stand for:

★ DİSK, the Confederation of Revolutionary Trade Unions of Turkey

Contents

Notes

See also

Notes

1. This article therefore mixes the variant spellings, but attempts to use the dominant spelling whenever this is clear from the context or other articles.

See also

★ Nipkow disk

★ Discus (fish)

★ Discus

★ Disco

★ Disc jockey

★ Disc brake
In astrophysics:

★ Protoplanetary disk

★ Scattered disc

★ Disc (galaxy)
In data storage:

★ Blu-ray Disc

★ HD DVD

★ EVD

★ Laserdisc

★ MiniDisc