hy·per·son·ic (h  p r-s n  k)adj. Of, relating to, or capable of speed equal to or exceeding five times the speed of sound. hy per·soni·cal·ly adv. |
hypersonic
Adjective
having a speed of at least five times the speed of sound
| hypersonic (hpr-snk) Relating to or capable of speeds equal to or exceeding five times the speed of sound (Mach 5 and above). Compare subsonicsupersonictransonic |
Of or pertaining to speeds equal to, or in excess of, five times the speed of sound. See also speed of sound.
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