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.
magnetic (comparative more magnetic, superlative most magnetic) 1  Of, relating to, operating by, or caused by magnetism. a magnetic recorder. 2  Having the properties of a magnet, especially the ability to draw or pull. 3  Determined by earth's magnetic fields. magnetic north. 4  Having an extraordinary ability to attract.