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Adjective: supersonic  ,soo-pu(r)'só-nik
  1. (of speed) greater than the speed of sound in a given medium (especially air)
    "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
    - ultrasonic

See also: inaudible, unhearable

Antonym: sonic, subsonic

Encyclopedia: Supersonic

Nearest

supersede
supersedeas
supersedure
supersensitised
supersensitive
supersensitized
supersession
superset
supersize
superslasher
supersonic
super-speed
superspreader
super-spreader
superstar
superstardom
superstate
superstition
superstitious
superstitious notion
superstitiously