clear-air turbulence

Noun CEFR B2

Definitions

The erratic movement of air masses in the absence of any visual cues, especially such movement that causes unexpected turbulence to an aircraft.

countable, uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See all B2 English words →

See also

Clear-cut clear-cutness clear-headedness clear-obscure clear-out clear-sighted

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