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hypersonic
This term is a technical descriptor used primarily in aerospace engineering, physics, and military defense. It specifically denotes a threshold of Mach 5, distinguishing it from supersonic speeds, which cover the range from Mach 1 up to Mach 5. The term carries a connotation of cutting-edge technology and extreme physical stress, as the transition to hypersonic speeds involves complex plasma effects and intense aerodynamic heating.
In a pragmatic sense, the word is rarely used in casual conversation unless referring to advanced weaponry or space exploration. It functions as a precise scientific classification rather than a general synonym for "very fast."
Meanings
Examples
We need to study the effects of hypersonic flow on the wing surface.
Imagine a world where hypersonic travel makes any city reachable in an hour.
The aircraft entered the hypersonic regime as it accelerated past Mach 5.
Do you think hypersonic weapons will change the nature of modern warfare?
The heat shield failed during the hypersonic reentry phase.
They are testing a hypersonic scramjet engine in the wind tunnel.
The probe reached hypersonic velocity before hitting the atmosphere.