ULTRASONIC

adjective
12 Scrabble
16 WWF
U 1
L 1
T 1
R 1
A 1
S 1
O 1
N 1
I 1
C 3

Definition

(acoustics) Beyond (higher in frequency than) the range of sound perceptible to the human ear; with a frequency of 20 kilohertz or higher.

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