Roget's Thesaurus

#247. Circularity

Nouns

circularity, roundness; rotundity etc. 249. 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 [Geom.], epicycle; semicircle; quadrant, sextant, sector. sphere etc. 249.

Verbs

make round etc. adj.; round. go round; encircle etc. 227; describe a circle etc. 311.

Adjectives

round, rounded, circular, annular, orbicular; oval, ovate; elliptic, elliptical; egg-shaped; pear-shaped etc. 245; cycloidal etc. n.; spherical etc. 249.

Phrases

I watched the little circles die [Tennyson].