ultrasonic

Definition of Ultrasonic in English :

1. supersonic, ultrasonic

having frequencies above those of audible sound

WordNet Lexical Database for English. Princeton University. 2010.

Ultrasonic

adjective

of, concerned with, or producing waves with the same nature as sound waves but frequencies above audio frequencies

adjective

designating or of a frequency of mechanical vibrations above the range audible to the human ear, i.e., above 20,000 vibrations per second

adj.

1. Of or relating to acoustic frequencies above the range audible to the human ear, or above approximately 20,000 hertz.

2. Of, relating to, or involving ultrasound.