Hypersonic definition is - of or relating to speed five or more times that of sound in air. What does hypersonically mean? ‘The X - 43A is the first aircraft to reach hypersonic speeds using an air-breathing engine.’ ‘He remembered the planning for hypersonic flight, faster than five times the speed of sound, leading up to the X - 15 program.’ All speeds in excess of the speed of sound are supersonic, but to be hypersonic requires even higher speed. Definition of hypersonic speed in the Definitions.net dictionary. Information and translations of hypersonically in the most comprehensive dictionary definitions resource on the web. Pronunciation of instead with 3 audio pronunciations, 7 synonyms, 15 translations, 19 sentences and more for instead. The implications of speed. Information and translations of hypersonic speed in the most comprehensive dictionary definitions resource on the web. Meaning of hypersonic speed. Since the 1970s, the term has generally been assumed to refer to speeds of Mach 5 and above. In aerodynamics, a hypersonic speed is one that is highly supersonic. Dictionary Collections Quiz Community Contribute ... UK firm designs hypersonic … What does hypersonic speed mean? Hypersonic definition: concerned with or having a velocity of at least five times that of sound in the same... | Meaning, pronunciation, translations and examples Meaning of hypersonically. (n.) Pertaining to or moving at a speed greatly in excess of the speed of sound, usually meaning greater than mach 5. Hypersonic weapons are designed to achieve speeds of up to 15,000 miles an hour. Definition of hypersonically in the Definitions.net dictionary. Examples of how to use “hypersonic” in a sentence from the Cambridge Dictionary Labs Listen to the audio pronunciation in several English accents. hyperspace pronunciation - How to properly say hyperspace. How to use hypersonic in a sentence. The term hypersonic means “moving at a speed greatly in excess of the speed of sound, usually meaning greater than Mach 5.” 1 This roughly translates into traveling at 60 miles per minute (or the equivalent of a four-minute commute from Washington, D.C., to New York), which would significantly reduce flight duration for commercial passengers.