oscillation

noun

Etymology: From French oscillation, from Latin oscillatio, from Latin oscillo. By surface analysis, oscillate + -ion.

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.”

   “In the early days troubles were experienced with oscillation from the rod drive and with the transformers, but were overcome later, and these machines performed useful service until superseded by more modern locomotives less costly in maintenance.”

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.