Hypersonic vs. Supersonic
Difference Between Hypersonic and Supersonic
equal to, or greater than, or capable of achieving, five times the speed of sound.
(of a speed) greater than the speed of sound (in the same medium, and at the same temperature and pressure)
far enough above the speed of sound as to cause significant differences in behaviour due to chemical reactions or disassociation of the air.
ultrasonic, having a frequency too high to be audible
An aircraft that can travel at the speed of sound.
(of speed) greater than the speed of sound in a given medium (especially air);a supersonic bomber flies so fast that it must release its bombs while the target is still over the horizonaircraft flying at subsonic speeds
having frequencies above those of audible sound