| Ellipsoid 1. (n.) A solid, all plane sections of which are ellipses or circles. See Conoid. 2. (a.) Alt. of Ellipsoidal. Thesaurus Entries ball, balloon, bladder, blob, boll, bolus, bubble, bulb, bulbil, bulblet, geoid, globe, globelet, globoid, globule, glomerulus, gob, gobbet, knob, knot, oblate spheroid, orb, orbit, orblet, pellet, prolate spheroid, rondure, sphere, spheroid, spherule |