Question

What is the meaning of oscillation????

Answer 1

oscillation is movement back and forth in a regular rhythm.

or in other words

Oscillation is the repetitive variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. The term vibration is precisely used to describe mechanical oscillation.

Answer 2

Oscillation is the movement back and forth in a regular rhythm or it's a regular variation in magnitude or position about a central point, especially of an electric current or voltage.