1 文書を見つけるための辞書。

• spheroid, ellipsoid of revolution
• 回転楕円体, スフェロイド
• 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"
• 楕円面をその軸の1つの周りを回転させてできる形