super-dimensional; transcending spacetime
Used in science fiction and theoretical contexts to describe something beyond ordinary space and time. Often appears in compound terms like 超時空要塞 (Super Dimension Fortress).
That anime is an epic story set in a super-dimensional world.
Super-dimensional theory is still at the hypothetical stage.
Compound of 超 (chō, 'super-') and 時空 (jikū, 'spacetime'). The term is a modern coinage, likely influenced by science fiction and theoretical physics.