Definition from Wiktionary, the free dictionary
- (mathematics) An n-dimensional Euclidian space with n > 3.
- (mathematics) A Euclidian space of unspecified dimension.
- (science fiction) A notional space orthogonal to the usual dimensions of space-time often used for faster-than-light travel.
- We can only get to the Nimrodian Galaxy if we go through hyperspace.
notional space in science fiction