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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According to the company, the hypersonic glide body is aimed at expanding strike options for defense forces by delivering high-performance capabilities in a cost-effective and adaptable platform. Jijo Malayil, Interesting Engineering, 26 June 2026 One reason for this strategy is the choice of a glide body rather than a powered hypersonic vehicle. David Szondy june 26, New Atlas, 26 June 2026 But intelligence strives to push presidents and their colleagues to think more strategically: What are the implications of hypersonic missiles? Gregory F. Treverton, The Conversation, 8 June 2026 None of those eight hypersonic missiles were intercepted. Lauren Kent, CNN Money, 4 June 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 Jun. 2026.

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