Fluidity refers to the quality or state of being fluid, which means having a smooth and continuous flow. In other words, it describes something that is easily moved, poured, or spread due to its lack of resistance or viscosity. Fluids are substances that can flow and take on the shape of their container, such as water, air, or oil. The term fluidity also applies to a person's ability to move gracefully or with ease, often associated with dance or athletic performance. In summary, fluidity refers to the characteristic of being smooth, continuous, and easily moved or spread.