[tur-byuh-luh
ns] 
| 1. | the quality or state of being turbulent; violent disorder or commotion. |
| 2. | Hydraulics. the haphazard secondary motion caused by eddies within a moving fluid. |
| 3. | Meteorology. irregular motion of the atmosphere, as that indicated by gusts and lulls in the wind. |
| turbulence (tûr'byə-ləns) Pronunciation Key
Chaotic or unstable eddying motion in a fluid. Avoiding excessive turbulence generated around moving objects (such as airplanes), which can make their motion inefficient and difficult to control, is a major factor in aerodynamic design. |