hyperspace Syllabification: (hy·per·space)Pronunciation: /ˈhīpərˌspās/Definition of hyperspace noun space of more than three dimensions. (in science fiction) a notional space-time continuum in which it is possible to travel faster than light. Derivatives hyperspatialPronunciation: /ˌhīpərˈspāSHəl/ adjective hyperspace in other Oxford dictionaries Definition of hyperspace in the British & World English dictionary