You searched for: “atmospherium
atmospherium (s) (noun), atmospheria (pl)
An optical system used to simulate images of atmospheric phenomena: An atmospherium, for example, projects cloud formations and storms on the inside of a dome.

An atmospherium is also the term for the building in which this projection system is used.

This entry is located in the following units: atmo-, atm- + (page 6) sphero-, spher-, -sphere- (page 5)