#247. [Simple circularity.] Circularity. —­ N. circularity, roundness;
rotundity &c. 249.
     circle, circlet, ring, areola, hoop, roundlet[obs3], annulus,
annulet[obs3], bracelet, armlet; ringlet; eye, loop, wheel; cycle, orb, orbit, rundle, zone, belt, cordon, band; contrate wheel[obs3], crown wheel; hub; nave; sash, girdle, cestus[obs3], cincture, baldric, fillet, fascia, wreath, garland; crown, corona, coronet, chaplet, snood, necklace, collar; noose, lasso, lassoo[obs3].
     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; egg-shaped; pear-shaped &c. 245; cycloidal &c. n[obs3].; spherical &c. 249. 
     Phr.  “I watched the little circles die” [Tennyson].

—­ p. 74 —­

     #248. [Complex curvature.] Convolution. —­ N. winding &c. v.;
convolution, involution, circumvolution; wave, undulation, tortuosity, anfractuosity[obs3]; sinuosity, sinuation[obs3]; meandering, circuit, circumbendibus[obs3], twist, twirl, windings and turnings, ambages[obs3]; torsion; inosculation[obs3]; reticulation &c. (crossing) 219; rivulation[obs3]; roughness &c. 256.
     coil, roll, curl; buckle, spiral, helix, corkscrew, worm, volute,
rundle; tendril; scollop[obs3], scallop, escalop[obs3]; kink; ammonite, snakestone[obs3].
     serpent, eel, maze, labyrinth.
     knot. 
     V. be convoluted &c. adj.; wind, twine, turn and twist, twirl; wave,
undulate, meander; inosculate[obs3]; entwine, intwine[obs3]; twist, coil, roll; wrinkle, curl, crisp, twill; frizzle; crimp, crape, indent, scollop[obs3], scallop, wring, intort[obs3]; contort; wreathe &c. (cross) 219. 
     Adj. convoluted; winding, twisted &c. v.; tortile[obs3], tortive|;
wavy; undated, undulatory; circling, snaky, snake-like, serpentine; serpent, anguill[obs3], vermiform; vermicular; mazy, tortuous, sinuous, flexuous, anfractuous[obs3], reclivate[obs3], rivulose[obs3], scolecoid[obs3]; sigmoid, sigmoidal[Geom]; spiriferous[obs3], spiroid[obs3];
     involved, intricate, complicated, perplexed; labyrinth,
labyrinthic[obs3], labyrinthian[obs3], labyrinthine; peristaltic; daedalian[obs3]; kinky, knotted.
     wreathy[obs3], frizzly, crepe, buckled; raveled &c. (in disorder) 59.
     spiral, coiled, helical; cochleate, cochleous; screw-shaped;
turbinated, turbiniform[obs3]. 
     Adv. in and out, round and round; a can of worms; Gordian knot.