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Hypersonic

adj

Definitions

Adjective
  1. 1
    Of a speed, equal to, or greater than, or capable of achieving, five times the speed of sound.

    "He said there was worry among intelligence and military officials that China or Russia could be experimenting with hypersonic technology."

  2. 2
    Of a speed, far enough above the speed of sound as to cause significant differences in behaviour due to chemical reactions or dissociation of the air.

Etymology

From hyper- + sonic. Doublet of supersonic.

See also for "hypersonic"

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