in volution (noun) coil: thread that curls
Sinonime: annular, arced, arched, arciform, bent, bowed, bulbous, circular, coiled, curled, curved, curvilinear, cylindrical, discoid, disk-shaped, domical, egg-shaped, elliptical, globose, globular, looped, orbed, orbicular, orbiculate, oval, ringed, rotund