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hypersonic

[ hahy-per-son-ik ]
/ ˌhaɪ pərˈsɒn ɪk /
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adjective

noting or pertaining to speed that is at least five times that of sound in the same medium.

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Origin of hypersonic

First recorded in 1935–40; hyper- + sonic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use hypersonic in a sentence

British Dictionary definitions for hypersonic

hypersonic
/ (ˌhaɪpəˈsɒnɪk) /

adjective

concerned with or having a velocity of at least five times that of sound in the same medium under the same conditions

Derived forms of hypersonic

hypersonics, noun
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

Scientific definitions for hypersonic

hypersonic
[ hī′pər-sŏnĭk ]

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.
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