el·lip·ti·cal train·er
/iˈlɪp.tɪ.kəl ˌtreɪ.nɚ/
Definition. The elliptical trainer, also known as a cross-trainer, is a piece of stationary cardiovascular equipment that moves in a smooth, oval motion and limits stress placed on the joints.
Elliptical comes from the Greek word “elleiptikos” meaning “pertaining to an ellipse”.