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virtual memory
This term describes a technical abstraction where the operating system tricks software into believing there is more RAM available than physically exists. It is a critical concept in computer architecture, specifically regarding the swap file or paging file used to move data between the physical memory and the disk.
Because it refers to a specific system mechanism or a conceptual state of memory management, it is treated as an uncountable noun. You would not refer to "virtual memories" when discussing the technical capacity of a computer; instead, you would discuss the "amount of virtual memory" or "virtual memory allocation."
Meanings
Examples
The operating system manages virtual memory to optimize performance.
I need to increase the size of my virtual memory to run this software.
Why is the computer lagging? It must be swapping data to virtual memory.
Virtual memory allows the system to handle tasks that exceed the physical RAM.
The page file is the area on the disk used for virtual memory.
Maybe I should upgrade my RAM instead of relying on virtual memory.
Excessive use of virtual memory can lead to a condition called thrashing.
Check the system settings to see how much virtual memory is allocated.