DictionaryRoot: planeta
Latin
planeta
planet
1 / 1
noun
planetarium
plan-ih-TAIR-ee-uhm/ˌplænɪˈteriəm/
A theater with a dome displaying a simulated night sky.
Etymology
Despite its “place for planets” formation, the word first named a machine representing planetary motions. It later named a sky-projection device, connecting the modern room with an artificial display of the heavens.