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H_________
Definitions
If something is hypersonic, it is travelling at a speed that is at least five times the speed of sound.
Word origin
From hyper- + sonic. Doublet of supersonic.
Used in a sentence
“He said there was worry among intelligence and military officials that China or Russia could be experimenting with hypersonic technology.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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