spher·oid /ˈsfɪrˌɔɪd, ˈsfɛr-/
 球狀體,迴轉橢圓體
 spher·oid /ˈsfɪ(ə)rˌɔɪd, ˈsfɛ(ə)r-/ 形容詞
 球形的,球狀的,球形體
 Sphe·roid n.  A body or figure approaching to a sphere, but not perfectly spherical; esp., a solid generated by the revolution of an ellipse about one of its axes.
 Oblate spheroid, Prolate spheroid.  See Oblate, Prolate, and Ellipsoid.
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 spheroid
      n : a shape that is generated by rotating an ellipse around one
          of its axes; "it looked like a sphere but on closer
          examination I saw it was really a spheroid" [syn: ellipsoid
          of revolution]