spheroid

• POS: Noun
• HYPHEN: sphe=roid

CIDE DICTIONARY

spheroid, n. [L. spheroides ball-like, spherical, Gr. ; sphere + e'i^dos form: cf. F. sphéroïde.].

 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.  [1913 Webster]

Oblate spheroid, Prolate spheroid. See Oblate, Prolate, and Ellipsoid.

OXFORD DICTIONARY

spheroid, n.
1 a spherelike but not perfectly spherical body.
2 a solid generated by a half-revolution of an ellipse about its major axis (prolate spheroid) or minor axis (oblate spheroid).

Derivative

spheroidal adj. spheroidicity n.

ROGET THESAURUS

spheroid

Rotundity

N rotundity, roundness, cylindricity, sphericity, spheroidity, globosity, cylinder, cylindroid, cylindrical, barrel, drum, roll, roller, rouleau, column, rolling-pin, rundle, cone, conoid, pear shape, egg shape, bell shape, sphere, globe, ball, boulder, bowlder, spheroid, ellipsoid, oblong spheroid, oblate spheroid, prolate spheroid, drop, spherule, globule, vesicle, bulb, bullet, pellet, pelote, clew, pill, marble, pea, knob, pommel, horn, knot (convolution), curved surface, hypersphere, hyperdimensional surface, rotund, round, cylindric, cylindrical, cylindroid, columnar, lumbriciform, conic, conical, spherical, spheroidal, globular, globated, globous, globose, egg shaped, bell shaped, pear shaped, ovoid, oviform, gibbous, rixiform, campaniform, campanulate, campaniliform, fungiform, bead-like, moniliform, pyriform, bulbous, tres atque rotundus, round as an orange, round as an apple, round as a ball, round as a billiard ball, round as a cannon ball.