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atmospherium
(ătˌmə-sfîrˈē-əm)
noun pl. at·mo·spher·i·a (-ē-ə) An optical device designed to project images of atmospheric phenomena, such as clouds, on the inside of a dome.
(ătˌmə-sfîrˈē-əm)
noun pl. at·mo·spher·i·a (-ē-ə)