Also called disk, hard disk. a rigid disk coated with magnetic material, on which data and programs can be stored.
(computing) another name for disk (sense 2)
A memory device, such as a floppy disk or a hard disk, that is covered with a magnetic coating. Digital information is stored on magnetic disks in the form of microscopically small, magnetized needles, each of which encodes a single bit of information by being polarized in one direction (representing 1) or the other (representing 0).
noun 1. a portion of a ferromagnetic material where the magnetic moments are aligned with one another because of interactions between molecules or atoms.
noun, Computers. 1. a cylinder coated with magnetic material, on which data and programs can be stored.
- Magnetic epoch
noun 1. (geology) a geologically long period of time during which the magnetic field of the earth retains the same polarity. The magnetic field may reverse during such a period for a geologically short period of time (a magnetic event)
noun 1. . noun 1. an imaginary line on the earth’s surface, near the equator, at all points on which there is no magnetic dip Also called aclinic line magnetic equator A line connecting all points on the earth’s surface at which the magnetic field is parallel to the Earth’s surface. A balanced magnetic needle […]