turbulence

باللغة العربية: اِضْطِرَاب

1. The state or fact of being turbulent or agitated; tempestuousness, disturbance. (uncountable)
2. Disturbance in a gas or fluid, characterized by evidence of internal motion or unrest. (uncountable)
3. Specifically, a state of agitation or disturbance in the air which is disruptive to an aircraft. (uncountable)
4. An instance or type of such state or disturbance. (countable)

الجمع turbulences