noun
magnetic disk
Technical term in computing; refers to a storage medium that uses magnetic patterns to record data, such as a hard disk or floppy disk.
磁気ディスクはデータの長期保存に使われる。
Magnetic disks are used for long-term data storage.
Compound of 磁気 (magnetism) and ディスク (disk), a direct calque of English 'magnetic disk'.