paraboloidPronunciation: /pəˈrab(ə)lɔɪd/Definition of paraboloid noun 1 (also paraboloid of revolution) a solid generated by the rotation of a parabola about its axis of symmetry. 2a solid having two or more non-parallel parabolic cross sections. Derivatives paraboloidal adjective paraboloid in other Oxford dictionaries Definition of paraboloid in the US English dictionary