Noun

• S: (n) round shape (a shape that is curved and without sharp angles)
• direct hyponym / full hyponym
• S: (n) bulb (anything with a round shape resembling a teardrop)
• S: (n) cone, conoid, cone shape (a shape whose base is a circle and whose sides taper up to a point)
• S: (n) disk, disc, saucer (something with a round shape resembling a flat circular plate) "the moon's disk hung in a cloudless sky"
• S: (n) coil, whorl, roll, curl, curlicue, ringlet, gyre, scroll (a round shape formed by a series of concentric circles (as formed by leaves or flower petals))
• S: (n) whirl, swirl, vortex, convolution (the shape of something rotating rapidly)
• S: (n) spheroid, ellipsoid of revolution (a shape that is generated by rotating an ellipse around one of its axes) "it looked like a sphere but on closer examination I saw it was really a spheroid"
• S: (n) sphere (a three-dimensional closed surface such that every point on the surface is equidistant from the center)
• S: (n) sphere (a solid figure bounded by a spherical surface (including the space it encloses))
• S: (n) cylinder (a surface generated by rotating a parallel line around a fixed line)
• S: (n) torus, toroid (a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle)
• S: (n) rim (the shape of a raised edge of a more or less circular object)
• direct hypernym / inherited hypernym / sister term