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English definition of “sphere”

sphere

noun [C] (ROUND OBJECT)    /sfɪər/ US  /sfɪr/
an object shaped like a round ball: Doctors have replaced the top of his hip bone with a metal sphere.Spherical, circular and annular objectsGeometrical shapes
(Definition of sphere noun (ROUND OBJECT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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