The antonym of “introspheral”is the adjective “extrospheral”.
The term “introsperal” was coined as part of the terminology of the “Digital Era Framework”. Among other things, the “Digital Era Framework” serves as a reference framework for the systematization of the way in which information manifests itself. Four spheres are differentiated: The cognisphere, the entisphere and the infosphere, which consists of the analog infosphere and the digital infosphere. When one of these spheres is considered, the adjective “introsperal” signals that something in relation to this sphere is directed from the outside inwards.