THESAURUS
anklet, arena, armlet, band, begird, belt, bracelet, cingulum, circling, circumambience, circumambiency, circumcincture, circumflexion, circumjacence, circumposition, close, collar, collarband, confine, container, containment, coop, court, courtyard, curtilage, delimited field, earring, ecliptic, embracement, encincture, encirclement, enclave, enclosure, encompassment, enfoldment, engird, envelopment, environment, equator, fascia, field, fillet, finger ring, fold, gird, girding, girdle, girdling, girt, girth, great circle, ground, hoop, inclusion, involvement, list, neckband, necklace, nose ring, pale, paling, park, pen, quad, quadrangle, quoit, ring, sash, square, surrounding, theater, toft, waistband, wristband, wristlet, yard, zodiac, zone
ROGET THESAURUS
Circularity
N
circularity, roundness, rotundity, circle, circlet, ring, areola, hoop, roundlet, annulus, annulet, bracelet, armlet, ringlet, eye, loop, wheel, cycle, orb, orbit, rundle, zone, belt, cordon, band, contrate wheel, 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, epicycle, semicircle, quadrant, sextant, sector, sphere, round, rounded, circular, annular, orbicular, oval, ovate, elliptic, elliptical, egg-shaped, pear-shaped, cycloidal, spherical, I watched the little circles die.