virtual storage

noun Computers.
  1. 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.
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. 2018

British Dictionary definitions for virtual memory

virtual storage

virtual memory

noun
  1. 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

virtual memory in Science

virtual memory

[vûrchōō-əl]
  1. A memory management system in a computer that temporarily stores inactive parts of the content RAM on a disk, restoring it to RAM when quick access to it is needed. This allows software to operate as though the computer has more RAM than it actually does.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.