Spacearium

== English == === Alternative forms === spacearium (rare) === Etymology === Blend of space +‎ planetarium; by surface analysis, space +‎ -arium. === Pronunciation === IPA(key): /speɪsˈɛɹiəm/ === Noun === Spacearium (rare, dated) A large room designed to display projections of outer space on its interior; a planetarium. ==== References ====