oscillation

noun4

1. •
   the act of oscillating or the state of being oscillated

   • The trial running tests which were made with the vehicles showed that they ride very steadily laterally, with almost complete absence of oscillation at all speeds. — 1950
2. •
   a regular periodic fluctuation in value about some mean
3. •
   a single such cycle
4. •
   (of a function) defined for each point x in the domain of the function by inf diam(f(U))∣Uisaneighborhoodofx, and describes the difference (possibly ∞) between the limit superior and limit inferior of the function near that point.