shape, configuration, conformation, contour, form - any spatial attributes (especially as defined by outline); "he could barely make out their shapes through the smoke"

globosity, globularness, rotundity, sphericalness, sphericity - the roundness of a 3-dimensional object

cylindricality, cylindricalness - the roundness of a 3-dimensional cylinder

circularity, disk shape - the roundness of a 2-dimensional figure