Energeia (竜域 or エネルゲイア Enerugeia) is the term that refers to the present world, as it is called by the Dingir.
Z/X Encyclopedia Entry
"Energeia" (ἐνέργεια) is the Ancient Greek word for "action", which later became the basis for the word "energy". Together with "Dynamis", they both refer to Aristotle's principle of potentiality and actuality.
The base kanji for Energeia (竜域 Ryūiki) means "dragon area", a reference to the Dingir Enki who originally found it.
- Z/X Encyclopedia (Japanese)