ROGET'S THESAURUS OF ENGLISH WORDS AND PHRASES ...

crown wheel; hub; nave; sash, girdle, cestus † , cincture, baldric, fillet, fascia, wreath,
garland; crown, corona, coronet, chaplet, snood, necklace, collar; noose, lasso, lassoo † .
ellipse, oval, ovule; ellipsoid, cycloid; epicycloid [Geom.], epicycle; semicircle;
quadrant, sextant, sector.
sphere &c 249.
V. make round &c adj.; round.
go round; encircle &c 227; describe a circle &c 311.
Adj. round, rounded, circular, annular, orbicular; oval, ovate; elliptic, elliptical; eggshaped;
pear-shaped &c 245; cycloidal &c n. † ; spherical &c 249.
Phr. I watched the little circles die [Tennyson].
248. [Complex curvature.] Convolution -- N. winding &c v.; convolution, involution,
circumvolution; wave, undulation, tortuosity, anfractuosity † ; sinuosity, sinuation † ;
meandering, circuit, circumbendibus † , twist, twirl, windings and turnings, ambages † ;
torsion; inosculation † ; reticulation &c (crossing) 219; rivulation † ; roughness &c 256.
coil, roll, curl; buckle, spiral, helix, corkscrew, worm, volute, rundle; tendril; scollop † ,
scallop, escalop † ; kink; ammonite, snakestone † .
serpent, eel, maze, labyrinth.
knot.
V. be convoluted &c adj.; wind, twine, turn and twist, twirl; wave, undulate, meander;
inosculate † ; entwine, intwine † ; twist, coil, roll; wrinkle, curl, crisp, twill; frizzle; crimp,
crape, indent, scollop † , scallop, wring, intort † ; contort; wreathe &c (cross) 219.
Adj. convoluted; winding, twisted &c v.; tortile † , tortive † ; wavy; undated, undulatory;
circling, snaky, snake-like, serpentine; serpent, anguill † , vermiform; vermicular; mazy,
tortuous, sinuous, flexuous, anfractuous † , reclivate † , rivulose † , scolecoid † ; sigmoid,
sigmoidal [Geom.]; spiriferous † , spiroid † ; involved, intricate, complicated, perplexed;
labyrinth, labyrinthic † , labyrinthian † , labyrinthine; peristaltic; daedalian † ; kinky, knotted.
wreathy † , frizzly, crepe, buckled; raveled &c (in disorder) 59.
spiral, coiled, helical; cochleate, cochleous; screw-shaped; turbinated, turbiniform † .
Adv. in and out, round and round; a can of worms; Gordian knot.
249. Rotundity -- N. rotundity; roundness &c adj.; cylindricity † ; sphericity, spheroidity † ;
globosity † .
cylinder, cylindroid † , cylindrical; barrel, drum; roll, roller; rouleau † , column, rollingpin,
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) 248.
curved surface, hypersphere; hyperdimensional surface.
V. render spherical &c adj.; form into a sphere, sphere, roll into a ball; give rotundity &c
n.; round.
Adj. rotund; round &c (circular) 247; 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 † ,