Turbulence
WordNet
noun
(1) Unstable flow of a liquid or gas
(2) A state of violent disturbance and disorder (as in politics or social conditions generally)
"The industrial revolution was a period of great turbulence"
(3) Instability in the atmosphere
WiktionaryText
Noun
- The state or fact of being turbulent or agitated; tempestuousness, disturbance.
- Disturbance in a gas or fluid, characterized by evidence of internal motion or unrest.
- Specifically, a state of agitation or disturbance in the air which is disruptive to an aircraft.
- An instance or type of such state or disturbance.