circumvolution
noun
cir·cum·vo·lu·tion sər-ˌkəm-və-ˈlü-shən 
ˌsər-kəm-vō-
: an act or instance of turning around an axis
Word History
Etymology
Middle English cyrcumvolucyoun, borrowed from Medieval Latin circumvolūtiōn-, circumvolūtiō "rotation, revolution," from Latin circumvolū-, variant stem of circumvolvere "to cause to revolve, twine or coil round," from circum- circum- + volvere "to set in a circular course, cause to roll" — more at wallow entry 1
First Known Use
15th century, in the meaning defined above