Disk

A disk or disc (see below) is anything that resembles a flattened cylinder in shape. More specifically:

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• In biology, an intervertebral disc is a cartilaginous joint between vertebrae in the spine of vertebrate animals.
• In mathematics, a disk is a geometrical object. See Disk (mathematics).
• A gramophone record (commonly "phonograph record" in U.S. English) is an analogue sound recording disc used on a gramophone or phonograph. It consists of a long spiral groove in on a side of a platter, commonly of vinyl, shellac or lacquer.
• The hard disk and floppy disk are magnetic storage media used in computers.
• A variety of optical storage media, such as the compact disc, DVD, and laserdisc, are used for digital data or video.
• Disc brakes are often used in automobiles.
• In astrophysics, an accretion disc or disk is a structure formed by material falling into a gravitational source.
• The Frisbee is a flying disc toy.
• The DiSC assessment is a psychological assessment used to determine individual's personality types and is often used in performance management and employement selection.
 
Disk: Disc or disk? ►