Hypersonic

A range of speed that is five times or more the speed of sound in air. See also: Hypervelocity, Subsonic, Supersonic.
Found on http://www.diracdelta.co.uk/science/source/h/y/hypersonic/source.html

hypersonic

Pertaining to or characterised by supersonic speeds of Mach 5 or greater. While any speed above the speed of sound may be referred to as supersonic, speeds of Mach 5 or greater are specifically referred to as hypersonic. ... Origin: hyper-+ L. Sonus, sound ... (05 Mar 2000) ...
Found on http://www.mondofacto.com/facts/dictionary?hypersonic

hypersonic

hypersonic (high' pur SAHN ik) 1. Much faster than the speed of sound. 2. Relating to speeds five or more times than that of the normal speed of sound in the air; such as, rockets, certain air currents, aircraft, etc.
Found on http://www.wordinfo.info/words/index/info/view_unit/1986/

hypersonic

Descriptive of something that travels at speeds greater than Mach 5 (five times the ambient speed of sound). At such speeds, the temperature in the boundary layer and on the surface of the moving vehicle exceeds 1,800 °F (1,000 °C) and aerodynamic heating becomes important in aircraft design...
Found on http://www.daviddarling.info/encyclopedia/H/hypersonic.html

hypersonic

Type: Term Pronunciation: hī′pĕr-son′ik Definitions: 1. Pertaining to or characterized by supersonic speeds of Mach 5 or greater. Although any speed above the speed of sound may be referred to as supersonic, speeds of Mach 5 or greater are specifically referred to as hypersonic.
Found on http://www.medilexicon.com/medicaldictionary.php?t=42606

HYPERSONIC

Speed of flight at or greater than Mach 5.0, exceeding SUPERSONIC.
Found on http://www.aerofiles.com/glossary.html

Hypersonic

[disambiguation] Hypersonic speeds are highly supersonic. Hypersonic may also refer to: ==Speed== ==Sound== ==Other uses== ...
Found on http://en.wikipedia.org/wiki/Hypersonic_(disambiguation)

HYPERSONIC

Speed of flight at or greater than Mach 5.0, exceeding SUPERSONIC.
Found on http://www.eaa.org/experimenter/glossary.asp

Hypersonic

Speed of flight at or greater than Mach 5.0, exceeding SUPERSONIC.
Found on http://www.superglossary.com/Glossary/Technology/Aviation/
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