On a computer, a technique of simulating additional memory by moving data between the computers memory and a hard disk.

A technique that enables a certain portion of hard disk space to be used as auxiliary memory so that your computer can access larger amounts of data than its main memory can hold at one time. 

using part of your hard drive as though it were "RAM".

In computer systems, the memory as it appears to, i.e., as it is available to, the operating programs running in the central processing unit (CPU). Note: The virtual memory may be smaller, equal to, or larger than the real memory present in the system.

Internet Glossary An imaginary memory area supported by some operating systems (for example, Windows but not DOS) in conjunction with the hardware. You can think of virtual memory as an alternate set of memory addresses. Programs use these virtual addresses rather than real addresses to store instructions and data. When the program is actually exec [..]

Virtual Memory is the unused memory on the hard disk used when certain applications require more RAM than is available on the machine.

)(n.) An imaginary memory area supported by some operating systems (for example, Windows but not DOS) in conjunction with the hardware. You can think of virtual memory as an alternate set of memory ad [..]

A commonly used memory addressing scheme to allow computer to see hard disk space as substitute RAM. (See virtual.) The Windows swap file is an example of this technology. The advantage is that there is vast memory available, while the disadvantage is that is is slow compared to RAM. This technology has been used since the early 60's on mainfr [..]

Memory is hardware that your computer uses to load the operating system and run programs. It consists of one or more RAM chips that each have several memory modules. The amount of real memory in a com [..]

This is a scheme by which disk space is made to substitute for the more expensive RAM space. Using it will often enable a comptuer to do things it could not do without it, but it will also often resul [..]

 Virtual memory increases the available memory your computer has by enlarging the "address space," or places in memory where data can be stored. It does this by using hard disk space for additional memory allocation.   

Virtual memory (VM) is a feature developed for the kernel of an operating system (OS) that simulates additional main memory such as RAM (random access memory) or disc storage. This technique involves [..]