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.

(computing) A copy of all or part of a disk drive retained for backup or replication purposes.

(computer hardware) A computer drive that reads disks.

(computing) A computer disk holding a bootstrap loader and an operating system.

(computing, dated) An 8-inch or 5.25-inch floppy diskette having storage capacity on both sides, and needing to be removed from the drive, flipped over and reinserted in order to access the other side.

Alternative spelling of optic disc