ro·tate 
(rōtāt)
(rōtāt)v. ro·tat·ed, ro·tat·ing, ro·tates
v.intr.
1. To turn around on an axis or center. See Synonyms at turn.
2. To proceed in sequence; take turns or alternate: Interns will rotate through the various departments.
v.tr.
1. To cause to turn on an axis or center.
2.
a. To plant or grow (crops) in a fixed order of succession.
b. To cause to alternate or proceed in sequence: The coach rotates her players frequently near the end of the game.
adj.
Having radiating parts; wheel-shaped.
[Latin rotāre, rotāt-, from rota, wheel; see ret- in the Appendix of Indo-European roots.]
rotat′a·ble adj.