"Rotary motion" refers to the circular movement or rotation of an object around a fixed point or axis. It involves a continuous circular or spinning motion where an object or part of an object turns around in a circular path. Full definition
Those vibrations can be converted into rotary motion to propel a miniature swimming robot. (discovermagazine.com)
This is not the first time electroactive polymers (EAPs) have been used to create rotary motion, says Anderson. (newscientist.com)
A second TFT display replaces the speedometer, while the shift knob is mounted on the steering column (right side) and is controlled through an interesting rotary motion. (mercedesblog.com)