What is "meta-system"

Meta-systems have several definitions. In general, they link the concepts " system" and " meta-". A "meta-system" is a system about other systems, such as describing, generalizing, modelling, or analyzing the other system(s).

According to Turchin and Joslyn (1997), this "natural" systemic definition is not sufficient for their Theory of Meta-system Transition, it also is not equivalent to the definition of system of systems in Autopoietic Systems Theory.