Anvari.org

VIRTUAL MEMORY: Memory That Exists In Effect, But Not In Fac

VIRTUAL MEMORY: Memory that exists in effect, but not in fact; the
usage is similar to that of the virtual particle in physics, the
difference being that a virtual particle probably does exist but
soon won't, while virtual memory probably doesn't but soon will.

Related:

Retrieved from http://www.anvari.org/fortune/Miscellaneous_Collections/296434_virtual-memory-memory-that-exists-in-effect-but-not-in-fac.html