oscillation

oscillation /os·cil·la·tion/ (os?i-la´shun) a backward and forward motion, like that of a pendulum.

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os·cil·la·tion (s-lshn)

n.

1. The act of oscillating.

2. The state of being oscillated.

3. A single oscillatory cycle.

4. A stage in inflammation in which the accumulation of white blood cells in the small vessels arrests the passage of blood, thus causing a to-and-fro movement of the blood at each cardiac contraction.

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oscil·lation·al adj.

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oscillation

a backward and forward motion, like that of a pendulum; also vibration, fluctuation or variation.