1. [syn: spheroid, ellipsoid of revolution]
The Collaborative International Dictionary of English v.0.48:
Spheroid \Sphe"roid\, n. [L. spheroides ball-like, spherical,
Gr. ???; ???? sphere + e'i^dos form: cf. F. sph['e]ro["i]de.]
A body or figure approaching to a sphere, but not perfectly
spherical; esp., a solid generated by the revolution of an
ellipse about one of its axes.
Oblate spheroid, Prolate spheroid. See Oblate,
Prolate, and Ellipsoid.
WordNet (r) 3.0 (2006):
n 1: a shape that is generated by rotating an ellipse around one
of its axes; "it looked like a sphere but on closer
examination I saw it was really a spheroid" [syn:
spheroid, ellipsoid of revolution]