adj.
Pronunciation: - ' sä-nik
Function: adjective
Etymology: Latin super- + sonus sound ― more at SOUND
Date: 1919
1 : ULTRASONIC
2 : of, being, or relating to speeds from one to five times the speed of sound in air ― compare SONIC
3 : moving, capable of moving, or utilizing air currents moving at supersonic speed
4 : relating to supersonic airplanes or missiles <the supersonic age>
– su · per · son · i · cal · ly \ -ni-k( ə -)l ē \ adverb