sonic boom sonic barrier • sonic delay line · · · Info · Definitions · Characters · · sonic boom · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (noun) an explosive sound caused by the shock wave of an airplane traveling faster than the speed of sound. Synonyms: sonic boom. Example: "A sonic boom follows an aircraft as a wake follows a ship." · · Noun Definition 1 Characters · · space U+0020 b latin small letter b U+0062 c latin small letter c U+0063 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073