noun🔗ShareSound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz."The doctor used ultrasounds to check the baby's development in the womb. "soundmedicinetechnologyphysicsfrequencydeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareThe use of ultrasonic waves for diagnostic or therapeutic purposes."The doctor used ultrasounds to check on the baby's development in the mother's womb. "medicinetechnologysoundphysicsdeviceChat with AIVocabulary GamePractice Reading
