Synonyms to closed circle

areola, O, annular muscle, annulus, aureole, chaplet, circle, circuit, circumference, circus, corona, coronet, crown, cycle, diadem, discus, disk, eternal return, fairy ring, garland, glory, halo, lasso, logical circle, loop, looplet, magic circle, noose, orbit, radius, ring, rondelle, round, roundel, saucer, sphincter, vicious circle, wheel, wreath, anthelion, antisun, aura, countersun, lunar corona, lunar halo, mock moon, mock sun, moon dog, nimbus, paraselene, parhelic circle, parhelion, rainbow, solar corona, solar halo, sun dog, cell, POW camp, Photronic cell, adytum, animal cell, apartment, ashram, bastille, bioplast, black hole, booth, borstal, borstal institution, box, bridewell, brig, bunch, cabal, cadre, camarilla, cavity, cellular tissue,