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spheroid

noun [C]
 
 
/ˈsfɪə.rɔɪd/ US  /ˈsfɪr.ɔɪd/ specialized

Definition

a solid object that is almost spherical: The Earth is a spheroid.Spherical, circular and annular objectsGeometrical shapes
(Definition of spheroid noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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