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Multi-word Results
| armillary sphere |
an ancient sighting instrument formed of rings that are arranged in the positions of the tropics, equator, and the like. |
| celestial sphere |
the infinitely large, imaginary sphere around the earth in which the stars, planets, and other celestial objects seem to be located. |
| sphere of influence |
foreign territory over which a state or nation exerts cultural, political, economic, or military authority. [3 definitions] |
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