'oscillation' definitions:

Definition of 'oscillation'

From: WordNet
noun
The process of oscillating between states
noun
(physics) a regular periodic variation in value about a mean [syn: oscillation, vibration]
noun
A single complete execution of a periodically repeated phenomenon; "a year constitutes a cycle of the seasons" [syn: cycle, oscillation]

Synonyms of 'oscillation'

From: Moby Thesaurus