frustum

Tanımlar (İngilizce)

1. isim A cone or pyramid whose tip has been truncated by a plane parallel to its base.

   “In a parabolic conoid this difference vaniſhes, the fruſtum being always equal to a cylinder of the ſame height upon the ſection of the conoid that biſects the altitude of the fruſtum and is parallel to its baſes.”

2. isim A portion of a sphere, or in general any solid, delimited by two parallel planes.

   “In some women it^([the os uteri]) is flat, in many more tuberose, and forming, as it were, a frustum of a sphere;[…].”