A “cyber-physical system” is a distinguishable set of elements of both the physical entisphere and the digital infosphere that form a transspheral functional unit by being interconnected in such a way as to enable a function, meaning or purpose to be fulfilled in a cross-spheral manner.

In the terminology of the “Digital Era Framework” physical objects are to be assigned to the entisphere. Therefore, the “Cyber-Physical Systems” are a subgroup of the “Cyber-Entispheral Systems”.

A “cyber-physical system” is an “interspheral system”, i.e. a transspheral with a “cyber-physical” configuration.