turbulence

1. (uncountable) The state or fact of being turbulent or agitated; tempestuousness, disturbance.Examples: "Turbulence was everywhere, within every blade of grass, every drop of dew on a leaf, every cloud in the sky, and every star beyond. The turbulence was purposeless, but in huge quantities of purposeless turbulence, purpose took shape."uncountable

2. (uncountable) Disturbance in a gas or fluid, characterized by evidence of internal motion or unrest.uncountable

3. (uncountable, aviation) Specifically, a state of agitation or disturbance in the air which is disruptive to an aircraft.uncountable

4. (countable) An instance or type of such state or disturbance.Examples: "In a brief and abashed Tory conference speech, Kwarteng admitted it had been a “tough day” – hours after rowing back on the tax cut for high earners. He said his economic plan had caused “a little turbulence”."countable