os·cil·la·tion
(ŏs′ə-lāshən)
(ŏs′ə-lāshən)n.
1.
a. The action of oscillating.
b. The state of being oscillated.
2. A single oscillatory cycle.
os′cil·lation·aladj.
oscillationOscillation of a clock pendulum takes it from point a to point b and back to a. The dashed red line is the position of the pendulum at rest.