CLEAR-AIR TURBULENCE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts

Classified under:

Nouns denoting stable states of affairs

Hypernyms ("clear-air turbulence" is a kind of...):

turbulence (instability in the atmosphere)

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