Hypersonic - definition, pronunciation, transcription

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Amer.  |ˌhaɪpərˈsɑːnɪk|  American pronunciation of the word hypersonic
Brit.  |haɪpəˈsɒnɪk|  British pronunciation of the word hypersonic

adjective

- (of a speed, aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.
- (of a speed, aeronautics) far enough above the speed of sound so as to cause significant differences in behaviour due to chemical reactions or disassociation of the air.
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