"The common definition of a process virtual machine is that it's an interpreter that can be written to that essentially emulates an OS environment, giving abstr

"The common definition of a process virtual machine is that it's an interpreter that can be written to that essentially emulates an OS environment, giving abstracted OS concepts and functionality." Is it? I have seen "virtual machine" used to describe the process abstraction and to describe the IR in compilers (hence "Java Virtual Machine"), and to describe the Forth environment (similar to compilers).