- noting or pertaining to speed that is at least five times that of sound in the same medium.
Origin of hypersonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Related Wordsrapid, agile, brisk, nimble, hot, quick, swift, fleeting, electric, flying, hurried, ready, dashing, snap, fleet, racing, active, winged, flashing, breakneck
Examples from the Web for hypersonic
Hypersonic weapons travel at extremely high speeds, anywhere from 3,840 to 16,250 miles an hour.
Unsurprisingly, Russia has started work on hypersonic weapons.
Hypersonic drones, like the drones before them, are the latest innovation in push-button warfare.
Hypersonic is the new supersonic, a frontier of speed dreamed of but not yet conquered.
Hypersonic weapons are the new arms race, with the United States, Russia, India and China all racing to develop them.
- concerned with or having a velocity of at least five times that of sound in the same medium under the same conditions
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Relating to or capable of speeds equal to or exceeding five times the speed of sound (Mach 5 and above). Compare subsonic supersonic transonic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.