- existing or traveling between dimensions of space or time: The best thing about an interdimensional space and time machine is that you never know quite when one is going to pop up.
- (in science fiction, fantasy, etc.) coming from an alternate dimension or a parallel universe: There's a wide range of character options, including an unholy paladin, an interdimensional warlord, a reptilian soothsayer, and an anarchist obsessed with transhumanism.I prefer the terms extraterrestrials or interdimensional beings.
