turbulence

Everyday

1. Turbulence is sudden, uneven movement of air or water that makes a plane shake or a boat rock. tree →
2. A time of confusion, trouble or sudden change. tree →
3. Turbulence can also describe a wild, stormy or restless character. tree →

In the lessons

Used in travel and safety: "We are flying through turbulence; please fasten your seat belts." In science: smooth (streamlined) flow versus turbulent flow of air and water. In history and news: political turbulence.

Examples

• The plane shook because of turbulence. tree →
• Keep your seat belt on in case of turbulence. tree →
• The pilot warned us about turbulence ahead. tree →
• Turbulence is uncomfortable but usually not dangerous. tree →
• The river rapids create turbulence in the water. tree →
• The country went through a time of turbulence. tree →
• The attitude is that of thoughtful repose, but the short, curly hair, dilated nostrils, and strongly marked features leave no doubt as to the force and turbulence of his character. tree →

Note

Uncountable: "some turbulence", not "a turbulence". Adjective: turbulent.