ellipsoid /ɪˈlɪp.sɔɪd/adjective 3noun 2forms 3 adjective3 •Shaped like an ellipse; elliptical. •Of or pertaining to an ellipse; elliptic. •Having the tridimensional shape of an ellipse rotated on its long axis. noun2 •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.Polarizability can be imagined as a three-dimensional ellipsoid centred on the centre of the molecule, as shown in Figure 10.4. — 2002 •Such a surface used as a model of the shape of the earth.Here the geoid is thirty meters below the ellipsoid. formsellipsoids · more ellipsoid · most ellipsoid
