اسم ( noun )
حالات: planetaria, planetariums
• (1) تعریف: an apparatus that projects a representation of the stars, planets, and the like, usu. upon a dome-shaped ceiling.
• (2) تعریف: a museum, building, or room in which such an apparatus is located.
• (3) تعریف: a structure, such as a mechanical model, that represents the position or motion of objects in the solar system.