A "toroidal" shape refers to a three-dimensional object that resembles a doughnut or ring. It is characterized by a central hole and a curved surface that wraps around in a circular manner. The term is derived from the word "torus," which is the mathematical name for this shape. Toroidal structures can be found in various fields, including mathematics, physics, and engineering. In physics, toroidal shapes are often used in the design of devices like tokamaks, which are used for nuclear fusion research. The toroidal configuration helps contain plasma efficiently, allowing for better control of the fusion process. Additionally, toroidal shapes can be seen in everyday objects, such as inner tubes and lifebuoys.