| Title | hypersonic |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary hy·per·son·ic ETYMOLOGY International Scientific Vocabulary DATE 1946 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 Webster's Third New International Dictionary, Unabridged hy·per·sonic \| ̷ ̷ ̷ ̷+\ adjective Etymology: International Scientific Vocabulary hyper- + sonic 1. : of, relating to, or being speed five times or more that of sound in air — compare sonic 2. : moving, capable of moving, or utilizing air currents that move at hypersonic speed < hypersonic wind tunnel > |
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