square

pentagonal, rectangular, concentric, curvilinear, cylindrical, conical, ovoid, ropelike, wavelike, serpentine, oblong, semicircular, reeded, curved, equilateral triangle, convex, elongated, chamfered, hexagonal, elliptical, conic, arcuate, equilateral, bullnose, oculus, perpendicular, helical, symmetrical, convex lens, elliptic, corbel, octagonal, fanlike, armillary sphere, diagrammatic, featherlike, bevelled, sawtooth, pyramidal, counterclockwise, radiolucent, concave, satin stitch, horizontal, tubelike, rectilinear, embroidery hoop, antiparallel, spherical, cruciform, ogee, winglike, cantilevered, lathed, trifold, hemispherical, diffraction grating, spheroidal, pictorial representation, flowerlike, quadrilateral, zigzag, asymmetrical, anticlockwise, ellipsoidal, binnacle, dentil, mitered, flower petal, isosceles triangle, undulate, knurled, burled, cogged, oppositely, pronated, chronological sequence, trapezoidal, diagonal, wormlike, nematic, linear, unsymmetrical, precatory, scallop shell, octahedral, lazy susan, mirrorlike, acoustic impedance, arching, knifelike, baluster, radial, elasticated, punctate, aperiodic, antiphonal, ridged, subdial, symmetric, starburst, slanty, circulars, letter, memorandum, memo, despatch, leaflet, meeting, pamphlet, report, dispatch, booklet, document, petition, proclamation, batch, bulletin, catalogue, communique, consignment, despatches, oval, noncircular, quadrangular, shaped, crescentic, helicoidal, squarish, triangular, annular, polygonal

., albatrellus ovinus, annular scotoma, areola, around, atoll, banjo, barn, bend, boss, brim, bryozoan, cam, canal of schlemm, cappelletti, catherine wheel, chaplet, circle, circle around, circle round, circular-knit, circularize, circularly, circumduction, circus, closed-chain, closed-ring, conic, conic section, coronal, crook, curtain ring, cyclophorus, dartboard, dart board, data track, dial, disc, discoid, discoidal, disk, disklike, dot, drive in, eccentricity, eddy, ellipse, encircle, fenestella, firewheel tree, garland, gas ring, genus cyclophorus, geosynchronous orbit, gird, great circle, gun muzzle, holding pattern, hooded merganser, hooded sheldrake, hoop, hyperbola, interleave, kepi, key ring, king arthur's round table, knob, laager, lager, lei, lophodytes cucullatus, lunette, maelstrom, mandala, martello tower, meander, medallion, monopteral, moss animal, musculus sphincter ani internus, muzzle, napkin ring, newel, oeil de boeuf, orbicular, orbiculate, orbiculate leaf, oval, panopticon, parabola, pass over, peaked cap, pie chart, pinwheel, point, polka dot, polyzoan, portable saw, punch, puncher, purl, pylorus, radius, ravioli, reel, revolve, revolve around, rim, ring, ringworm, ring of color, rivet, roll, rosette, rose window, rotunda, round, roundhouse, roundworm, round file, round table, saucer, schlemm's canal, scottish reel, screw, sea mat, sea moss, service cap, sheep polypore, sinus venosus sclerae, spot-weld, spotweld, stenocarpus sinuatus, stir, stirred, stud, stuffer, sunburst, sunray, swirl, thread, tinea, towel ring, track, tread-wheel, treadmill, treadwheel, trepan, trephination, turn, turntable, viroid, virusoid, vortex, wander, weave, wheel, wheel tree, whirl, whirlpool, wind, wipe, wreath, yachting cap, yurt, zodiac

ad, advert, advertisement, advertising

annular, annulate, annulated, ball-shaped, bill, broadsheet, broadside, capitate, circinate, coccoid, cyclic, cyclical, discoid, discoidal, disklike, flier, flyer, global, globose, globular, handbill, moon-round, moonlike, nutlike, orbicular, orbiculate, ring-shaped, ringed, ringlike, round, rounded, roundish, spheric, spherical, throwaway