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Definition of hypersonic

hypersonic

/ˌhaɪ.pɚˈsɑː.nɪk/
hy · per · son · ic
Adverb:hypersonically
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hypersonic Lexical Profile

hypersonic Game Scores & Validity

• adjective

1

Relating to, operating at, or moving at speeds of at least five times the speed of sound (Mach 5 or higher).

Example

"Aerospace engineers tested the new craft in a specialized wind tunnel to study how materials withstand hypersonic flight."

Synonyms
View all synonyms for hypersonic
Antonyms
View all antonyms for hypersonic

Word Nuance & Usage

In aerodynamics, 'hypersonic' specifically denotes speeds of Mach 5 or greater, distinguishing it from 'supersonic' (which begins just above Mach 1, the speed of sound) and 'ultrasonic' (which refers to high-frequency sound waves rather than physical velocity).

• Rhymes for hypersonic

• Nearby Words

hyperrealistic
hypersensitive
hypersexual
hypersonic
hyperspace
hypertension
hypertensive

Word Origin & Etymology

Coined in the 1940s in aerodynamics from the Greek prefix 'hyper-' (meaning 'over' or 'beyond') combined with 'sonic' (from Latin 'sonus', meaning 'sound').

Cite this Entry

Wordmom. (2026). Definition of Hypersonic. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/hypersonic
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