laserium means an indoor laser light show. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
Originally a trade name. Compare planetarium.
noun
- An indoor laser light show.“Like a laserium, the walls and ceiling had become a three-hundred-sixty-degree movie screen, and a very real image of outer space—probably footage from NASA's Voyager expedition—surrounded us.”