Updated: 04/26/2017 by Computer Hope

Computer compact disc aka CDOptical data storage device that is round, flat, and ridged that is written to using a laser. An examples of a disc is a Blu-ray, CD, and a DVD.

Tip: When talking about a disk or diskette, you're referring to a floppy diskette or hard disk. However, when talking about a Blu-ray, CD, or DVD you should use "disc," for example, "Have you seen the Blu-ray disc?"

CD terms, Disk