hypersonic

adjective

hy·​per·​son·​ic ˌhī-pər-ˈsä-nik How to pronounce hypersonic (audio)
1
: of or relating to speed five or more times that of sound in air compare sonic
2
: moving, capable of moving, or utilizing air currents that move at hypersonic speed
hypersonic wind tunnel
hypersonically adverb

Examples of hypersonic in a Sentence

Recent Examples on the Web
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Besides the world-first maglev sledge system, the Jinan facility, operated by the Chinese Academy of Sciences’ Institute of Electrical Engineering, also supports advances in hypersonic flight, next-generation aerospace materials, and innovative space launch systems. Chris Young, Interesting Engineering, 26 Jan. 2026 The Golden Dome is a long-term missile defense concept aimed at protecting North America from ballistic, cruise and hypersonic missile threats. Emma Bussey, FOXNews.com, 26 Jan. 2026 As hypersonic weapons compress decision timelines and expand polar attack vectors, Greenland’s strategic value increases. Paul McCarthy, Boston Herald, 23 Jan. 2026 By employing large hypersonic missiles, the number of other munitions, including standard vertical launch system cells, is also reduced. Peter Suciu, Forbes.com, 22 Jan. 2026 See All Example Sentences for hypersonic

Word History

Etymology

International Scientific Vocabulary

First Known Use

1946, in the meaning defined at sense 1

Time Traveler
The first known use of hypersonic was in 1946

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Cite this Entry

“Hypersonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypersonic. Accessed 3 Feb. 2026.

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