clear-air turbulence clearage • clearance · · · Info · Definitions · Characters · · clear-air turbulence · · Text Common · · Latin · · Scripts 20 · · Length 5 · · Syllables Definitions · · · (noun) strong turbulence in an otherwise cloudless region that subjects aircraft to violent updrafts or downdrafts. Synonyms: clear-air turbulence. · · Noun Definition 1 Characters · · space U+0020 - hyphen-minus U+002D a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075