Meaning: Able to withstand attack. Synonyms: unassailable; unattackable; impregnable; inviolable; secure; strong. Context examples: an impregnable fortress / fortifications that made the frontier inviolable. Similar: invulnerable (immune to attack; impregnable)
Definition - What does Magnetic Disk mean? A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots and sectors. Hard disks, zip disks and floppy disks are common examples of magnetic disks.
A: A floppy disk is covered with iron oxide, a magnetic material, and the floppy drive records information on the disk by magnetically rearranging the material. The drive reads the data on a floppy disk by sensing the arrangement of the magnetic coating and translating it into computer code.