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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In 2023, the Lockheed Martin version of HAWC flew faster than Mach 5, above 60,000 feet and over 300 nautical miles, providing data for subsequent Air Force hypersonic programs. — Kaif Shaikh, Interesting Engineering, 20 Sep. 2026 In May 2026, his team canceled the deployment to Europe of an army task force equipped with the new Dark Eagle hypersonic weapons system, which would have threatened important military targets in Russia and thus strengthened deterrence. — Franklin C. Miller, Foreign Affairs, 15 Sep. 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

Browse Nearby Words

Cite this Entry

“Hypersonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypersonic. Accessed 24 Sep. 2026.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster