adjective🔗ShareUltrasonore(acoustics) Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher."The dog whistle emits an ultrasonic sound that humans can't hear, but dogs can. "Le sifflet pour chien émet un son ultrasonore que les humains ne peuvent pas entendre, mais que les chiens peuvent entendre.soundphysicsfrequencytechnologyscienceelectronicsChat with AIVocabulary GamePractice Reading
