hypersonic

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌhaɪpəˈsɒnɪk/US:USA pronunciation: respellingUSA pronunciation: respelling(hī′pər son′ik)


WordReference Random House Unabridged Dictionary of American English © 2025
hy•per•son•ic  (hī′pər son′ik),USA pronunciation adj. 
  1. Physicsnoting or pertaining to speed that is at least five times that of sound in the same medium.
  • hyper- + sonic 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
hypersonic / ˌhaɪpəˈsɒnɪk/
  1. concerned with or having a velocity of at least five times that of sound in the same medium under the same conditions
'hypersonic' also found in these entries (note: many are not synonyms or translations):
ablation

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