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Memory, often as simulated on a hard disk, that emulates RAM, allowing an application to operate as though the computer had more memory than it actually does.
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|Noun||1.||virtual memory - (computer science) memory created by using the hard disk to simulate additional random-access memory; the addressable storage space available to the user of a computer system in which virtual addresses are mapped into real addresses|
computer memory, computer storage, memory board, store, memory, storage - an electronic memory device; "a memory and the CPU form the central part of a computer to which peripherals are attached"