What is another word for hypersonic?
Pronunciation: [hˌa͡ɪpəsˈɒnɪk] (IPA) 
Hypersonic is an adjective commonly utilized to describe high-speed movements or operations associated with aircraft, rockets, or missiles. Synonyms for hypersonic include supersonic, ultrasonic, and transonic. Supersonic describes any speed faster than the speed of sound, and can be used equally in the context of aircraft or other high-speed objects. Ultrasonic typically refers to sound waves beyond the range of human hearing, but is also used to describe very high-speed objects, such as lasers or medical equipment. Transonic, on the other hand, refers to objects traveling at speeds near or around the speed of sound. All of these terms have been used interchangeably at times when referring to high-speed travel in the aerospace, military, and scientific communities.
