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Definition of density
noun (plural densities)
- Computing a measure of the amount of information on a storage medium (tape or disk). For magnetic tape it is the amount of information recorded per unit length of tape (bits per inch or millimeter); for a disk, a fixed number of bits per sector, sectors per track, and tracks per disk:chip density doubles every eighteen months [as modifier, in combination]:a low-density 5.25-inch floppy disk a drive capable of handling high-density 1.44 megabyte disks
early 17th century: from French densité or Latin densitas, from densus 'dense'