Circular refers to a shape that is round and has no corners or edges. It is defined by all points being equidistant from a central point, known as the center. Common examples of circular objects include wheels, coins, and plates. In a broader context, "circular" can also describe processes or systems that aim to minimize waste and make the most of resources. This concept is often associated with the circular economy, which focuses on reusing, recycling, and reducing materials to create a sustainable environment.