A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x²/a² + y²/b² + z²/c² = 1.
Such a surface used as a model of the shape of the earth.
Shaped like an ellipse; elliptical.
Having the tridimensional shape of an ellipse rotated on its long axis.
Of or pertaining to an ellipse; elliptic.
A structural motif or finial in the shape of a sphere
A spherical body; a sphere, especially one of the celestial spheres; a sun, planet, or star
An orbit of an heavenly body
Any revolving circular body, such as a wheel
A sphere of action.
A translucent sphere appearing in flash photography (Orb (optics))
A blank window or panel.
A body of soldiers drawn up in a circle, as for defence, especially infantry to repel cavalry.
One of the azure transparent spheres conceived by the ancients to be enclosed one within another, and to carry the heavenly bodies in their revolutions
The time period of an orbit
The eye, seen as a luminous and spherical entity
A globus cruciger; a ceremonial sphere used to represent royal or imperial power
To encircle; to surround; to enclose.
To become round like an orb.
To form into an orb or circle.