plural of unit disk

(astronomy) A structure formed by matter falling into a gravitational source such as a galaxy, black hole, or protostar.

(computer hardware) A removable disk used for storing digital data, measuring between 2 and 8 inches diagonally and storing between 80 KB and 240 MB.

Alternative spelling of disc jockey

the flat part of a spiral galaxy around the central bulge

A hard disk

(computer hardware) One of a series of parallel magnetic recording disks in a drive unit, used for the recording and retrieval of digital information; used especially in personal computers.

(astronomy) A rotating disk of dense gas and dust surrounding a young newly formed star, and from which planets may be formed.

Alternative form of slipped disc

A form of digital media on a plastic disc read by a laser in a CD drive. It comes in several varieties including CD-ROM, CD-R, and CD-RW.