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supersonic

adjective
 
 
/ˌsuː.pəˈsɒn.ɪk/ US  /-pɚˈsɑː.nɪk/

Definition

faster than the speed of sound: a supersonic fighter planeAviationTravelling by aircraftMovement through the airSpeed of motionFast and rapidShort in time
(Definition of supersonic adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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