長ちょう球きゅう

noun, noun which may take the genitive case particle 'no'

prolate spheroid

A mathematical term for an ellipsoid of revolution where the polar axis is longer than the equatorial diameter. Used in geometry and physics.

• ラグビーボールの形かたちは長ちょう球きゅうに近ちかい。

  The shape of a rugby ball is close to a prolate spheroid.

• 長ちょう球きゅうの体たい積せきを計けい算さんする公こう式しきを覚おぼえていますか。

  Do you remember the formula for calculating the volume of a prolate spheroid?