1. Pertaining to or characterized by a speed greater than the speed of sound. SEE ALSO: hypersonic. 2. Pertaining to sound vibrations of high frequency, above the level of human audibility. SEE ALSO: ultrasonic. [super- + L. sonus, sound]
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su·per·son·ic -'sän-ik adj
1) ULTRASONIC (1)
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 -i-k(ə-)lē adv
supersonic n
1) a supersonic wave or frequency
2) a supersonic airplane
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su·per·son·ic (soo″pər-sonґik) [super- + L. sonus sound] 1. having a speed greater than the velocity of sound, that is, faster than approximately one-fifth mile per second (or 720 miles an hour) in air. 2. ultrasonic.Medical dictionary. 2011.