Of, relating to, or capable of speed equal to or exceeding five times the speed of sound.
Designating, of, or traveling at a speed equal to five times the speed of sound or greater.
Relating to or capable of speeds equal to or exceeding five times the speed of sound (Mach 5 and above).
(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.
Origin of hypersonic
- hyper- + sonic