Noun

1. turbulence, turbulency, physical phenomenon

usage: unstable flow of a liquid or gas

2. turbulence, bad weather, inclemency, inclementness

usage: instability in the atmosphere

3. turbulence, upheaval, Sturm und Drang, disorder

usage: a state of violent disturbance and disorder (as in politics or social conditions generally); "the industrial revolution was a period of great turbulence"

See also: turbulence (Dictionary)