ro·tate 
(r
ōt
āt)
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.