cyclic

Short definition from Wiktionary

Adjective

1. 1
   Characterized by, or moving in cycles, or happening at regular intervals; cyclical
2. 2
   Having chains of atoms arranged in a ring.
3. 3
   Having parts arranged in a whorl.
4. 4
   Being generated by only one element.
5. 5
   Able to be inscribed in a circle.
6. 6
   Firing at its full cyclic rate.

Noun

1. 1
   The flight control used to control a helicopter's direction and rate of horizontal movement by tilting the lift vector of the helicopter's main rotor disk.