hypersonic

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English[edit]

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Etymology[edit]

hyper- +‎ sonic

Adjective[edit]

hypersonic (comparative more hypersonic, superlative most hypersonic)

  1. (of a speed, aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.
  2. (of a speed, aeronautics) far enough above the speed of sound so as to cause significant differences in behaviour due to chemical reactions or disassociation of the air.

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