ultrasonicEnglishOxford Dictionary of Englishultrasonic /ˌʌltrəˈsɒnɪk / ▸ adjective of or involving sound waves with a frequency above the upper limit of human hearing. – DERIVATIVES ultrasonically /ˌʌltrəˈsɒnɪk(ə)li / adverb
EnglishOxford Dictionary of EnglishEnglishOxford Dictionary of English
EnglishOxford Dictionary of English