spherical

This term describes a precise geometric perfection where every point on the surface is equidistant from the center. It carries a clinical, mathematical tone that suggests symmetry and completeness, often used in scientific or technical descriptions of planets, atoms, or architectural domes. While round is a general term that can describe a flat circle or an irregular oval, spherical specifically demands a three-dimensional volume. Using this word instead of round signals a shift from casual observation to a more rigorous or formal description of spatial properties.