PLANETARIUM
\plˌanɪtˈe͡əɹi͡əm], \plˌanɪtˈeəɹiəm], \p_l_ˌa_n_ɪ_t_ˈeə_ɹ_iə_m]\
Definitions of PLANETARIUM
- 2006 - WordNet 3.0
- 2011 - English Dictionary Database
- 1899 - The american dictionary of the english language.
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an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
By Princeton University