Term: planetarium: an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
Broader: optical device: a device for producing or controlling light | Unrelated: globulin: a family of proteins found in blood and milk and muscle and in plant seed
Broader: optical device: a device for producing or controlling light | Unrelated: addressing machine: a printer that automatically prints addresses on letters for mailing
Broader: optical device: a device for producing or controlling light | Unrelated: field day: (military) a day for military exercises and display
Broader: optical device: a device for producing or controlling light | Unrelated: chlorophoneus: a genus of Malaconotinae
Broader: optical device: a device for producing or controlling light | Unrelated: communization: a change from private property to public property owned by the community
Broader: optical device: a device for producing or controlling light | Unrelated: liechtensteiner: a native or inhabitant of Liechtenstein
Broader: optical device: a device for producing or controlling light | Unrelated: shell plating: the plates covering the frame of a steel ship and corresponding to the planking of a wooden ship
Broader: optical device: a device for producing or controlling light | Unrelated: percolator: a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans
Broader: optical device: a device for producing or controlling light | Unrelated: repression: (psychiatry) the classical defense mechanism that protects you from impulses or ideas that would cause anxiety by preventing them from becoming conscious
Broader: optical device: a device for producing or controlling light | Unrelated: stockpile: a storage pile accumulated for future use