Minidisc

Is used in a variety of contexts to depict miniature "MD" optical discs and/or magnetic discs smaller than the standard 4.72 inch CD. Some MD alternatives such as the Sony MD Data 2.5 inch disk are smaller than floppy discs but hold nearly as much as a CD-ROM. The Sony version holds up to 74 minutes of CD quality audio or 140 Mb of data storage. The most typical MD size is the 2.5 inch audio disc. The term MD-Data refers to a minidisc used to record computer files and hypermedia presentations. MD options are reviewed by Miastkowski (1994).