ROTATING is a term used to describe an object that is moving in a circular motion around a fixed point. It is also known as REVOLVING, which is the 9-letter crossword solution for the term. This type of motion is often seen in machines such as motors and turbines, where the parts are constantly spinning around a central axis. Rotating objects can also be found in nature, such as planets orbiting around the sun or the rotation of the Earth on its axis.