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| ar·mil·lar·y sphere [ rmə lèrree sfr, aar mìlləree sfr ] (plural ar·mil·lar·y spheres) |
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| Definition: |
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early model of universe: a spherical model of the universe, first used by early Greek astronomers, in which the relative positions of the Earth and other astronomical objects are represented by intersecting metal rings
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| [< modern Latin armillaris< Latin armilla "arm bracelet" < armus "shoulder"] |
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