环行运动
Circumduction \Cir`cum*duc"tion\, n. [L. circumductio.] 1. A leading about; circumlocution. [R.] --Hooker. 2. An annulling; cancellation. [R.] --Ayliffe. 3. (Phisiol.) The rotation of a limb round an imaginary axis, so as to describe a concial surface.
circumduction n : a circular movement of a limb or eye