👉 The term "rotundity" is a measurement that describes how the body of an object is shaped and its overall size. It can be defined as the ratio of the circumference of the circular part to the diameter, or in other words, it measures the length of the axis on which the object's shape is centered. Rotundity is often used in engineering and architecture to determine if a building or structure is "rotund," meaning that its overall shape resembles a sphere or a cylinder.