Definição: A color hue with medium-low wavelength of that portion of the visible spectrum lying between yellow and blue, evoked in the human observer by radiant energy with wavelengths of approximately 490 to 570 nanometers.
Definição: A shape quality inhering in a bearer by virtue of the bearer's being such that every part of the surface or the circumference is equidistant from the center.
Definição: A spheroid quality inhering in a bearer by virtue of the bearer's resembling a ball (a sphere whose equatorial diameter is equal to the polar diameter).
