English

Definition of ultrasonic adjective from the Oxford Advanced Learner's Dictionary

 

ultrasonic

 adjective
adjective
BrE BrE//ˌʌltrəˈsɒnɪk//
 
; NAmE NAmE//ˌʌltrəˈsɑːnɪk//
 
[usually before noun]
 
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(of sounds) higher than humans can hear ultrasonic waves
See the Oxford Advanced American Dictionary entry: ultrasonic