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virtual storage

noun Computers.

a system whereby addressable memory is extended beyond main storage through the use of secondary storage managed by system software in such a way that programs can treat all of the designated storage as addressable main storage.

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Compare real storage.

Origin of virtual storage

First recorded in 1970–75
Also called virtual memory.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for virtual storage

virtual storage

virtual memory

noun

a computer system in which the size of the memory is effectively increased by automatically transferring sections of a program from a large capacity backing store, such as a disk, into the smaller core memory as they are required
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012