supersonic

Adjective
  1. (of speed) greater than the speed of sound in a given medium (especially air) (synset 300177148)
    "a supersonic bomber flies so fast that it must release its bombs while the target is still over the horizon"
  2. Having frequencies above those of audible sound (synset 300176561)
    similar to: inaudible, unhearable - impossible to hear; imperceptible by the ear
    same as: ultrasonic

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