noun: (computing) Initialism of virtual machine. [(computing) A software emulation of a computer that runs in an isolated partition of a real computer.]
noun: (computing) Initialism of virtual memory. [(computing) Memory that appears to be RAM but is being simulated (by a process called paging) on a hard disk; allows a computer to operate as if it had more memory than it actually does, but with some loss of performance]
noun: (telephony) Initialism of voice mail.
noun: (software engineering) Initialism of view model. [(software engineering) A framework that defines a coherent set of views to be used in the construction of an enterprise architecture, software architecture, or system architecture.]