Paraboloid
in geometry, a volume der, such that sections made by planes bounded by a surface of the second orby a surface of the second orpassed in certain directions are common parabolas. It is a characteristic property of paraboloids that they have no centers except in the extreme cases, when they have an infinite number of centers.
There are three varieties of paraboloids, elliptical, elliptical, hyperbolic, and parabolic. physician, and chemist; born in Einsie