SUBSONIC


Meaning of SUBSONIC in English

/ ˌsʌbˈsɒnɪk; NAmE -ˈsɑːn-/ adjective

less than the speed of sound; flying at less than the speed of sound

—compare supersonic

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.