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

Examples of hypersonic in a Sentence

Recent Examples on the Web
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Its hypersonic flight profile is intended to shorten the time available for an adversary to detect, assess, and respond to an incoming strike. — Aamir Khollam, Interesting Engineering, 28 Oct. 2026 The other three have been conducted by HASTE, a suborbital variant of Electron that allows customers to test technologies in a hypersonic flight environment. — Mike Wall, Space.com, 23 Oct. 2026 That month, JPMorgan was also involved in a $1 billion funding round for Castelion, whose flagship product is a relatively low-cost hypersonic missile called Blackbeard. — Hugh Son, CNBC, 19 Oct. 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 29 Oct. 2026.

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