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| a chattering or flighty, light-headed person. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| 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. |