Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.
Class II. Words Relating to SpaceSection III. Form
2. Special Form
249. Rotundity.
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].
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.