oscillation
noun /ˌɒsɪˈleɪʃn/
  /ˌɑːsɪˈleɪʃn/
(formal)- [uncountable, singular] a regular movement between one position and another or between one amount and another- the oscillation of the compass needle
- oscillation between A and B the economy’s continual oscillation between growth and recession
 
- [countable] a single movement from one position to another of something that is oscillating- oscillation (of something) (against something) the oscillations of the pound against foreign currency
- oscillation between A and B the natural oscillations between quantum states in atoms
 
- [uncountable, countable] a repeated change between different feelings, types of behaviour or ideas- oscillation between A and B his oscillation, as a teenager, between science and art
- Her oscillations of mood frustrated him.