Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class II. Words Relating to Space
Section III. Form
2. Special Form

249. Rotundity.

   NOUN:ROTUNDITY; roundness &c. adj.; cylindricity; sphericality, sphericity, spheroidicity or spheroidity, globoseness, globosity, globularity, annularity, orotundity, orbiculation.
  CYLINDER, cylindroid; barrel, drum; roll, roller; rouleau, column, rolling-pin, rundle.
  CONE, conoid; pear-shape, egg-shape, bell-shape.
  SPHERE, globe, ball, bowlder or boulder; spheroid, geoid, globoid, ellipsoid; oblong -, oblate- spheroid; drop, spherule, globule, vesicle, bulb, bullet, pellet, clew, pill, marble, pea, knob, pommel, horn, knot; oval [See Circularity].
   VERB:RENDER SPHERICAL &c. adj.; form into a sphere, sphere, roll into a ball; give rotundity &c. n.; round.
   ADJECTIVE:ROTUND; round (circular) [See Circularity]; cylindric or cylindrical, cylindroid or cylindroidal, columnar, vermiform, lumbriciform; conic, conical; spherical, spheroidal; globular, globous, globose; gibbous; fungiform, bulbous; teres atque rotundus [L.]; round as -an orange, – an apple, – a ball, – a billiard ball, – a cannon ball.
  BEAD-SHAPED, beadlike, moniliform, monilated.
  BELL-SHAPED, campaniform, campanulate, campanulous, campanular.
  EGG-SHAPED, ovoid, oviform, ovoidal, ovate, globoid, globate or globated; obovate, obovoid [both bot.].
  PEAR-SHAPED, pyriform.
  RICE-SHAPED, riziform.
   QUOTATION:She is spherical, like a globe.—Comedy of Errors