sound barrier

noun

Definition of sound barrier 

: a sudden large increase in aerodynamic drag that occurs as the speed of an aircraft approaches the speed of sound

Examples of sound barrier in a Sentence

Recent Examples on the Web

While trimming trees on the freeway side of a sound barrier less than a mile north of Florin Road, a Caltrans work crew discovered the 59-year-old man's body, CHP Officer James Young said. Jordan Cutler-tietjen, sacbee, "Man discovered behind trees near I-5 committed suicide, CHP says," 10 July 2018 That's a smoldering tractor trailer over the sound barrier wall. Chelsea Prince, ajc, "BREAKING: Fiery tractor-trailer crash shuts down I-75 North," 9 July 2018 Yeager, 95, became the first pilot to break the sound barrier in 1947. Scott Lauber, Philly.com, "Nick Williams continues to make most of playing time with Phillies," 14 June 2018 Unity also broke the sound barrier for the first time, hitting a top speed of Mach 1.87 during the powered flight. Jay Bennett, Popular Mechanics, "Virgin Galactic Conducts First Rocket-Powered Flight of VSS Unity," 5 Apr. 2018 Called the Low Boom Flight Demonstrator, the plane aims to achieve what its name suggests: reduce the ear-splitting, sonic boom that occurs when a plane breaks the sound barrier. Alex Stuckey, San Antonio Express-News, "NASA plans supersonic jet that could cut commercial flight times in half," 12 Apr. 2018 Called the Low Boom Flight Demonstrator, the plane aims to achieve what its name suggests: reduce the ear-splitting, sonic boom that occurs when a plane breaks the sound barrier. Alex Stuckey, San Antonio Express-News, "NASA plans supersonic jet that could cut commercial flight times in half," 12 Apr. 2018 Due to its noise when breaking the sound barrier, the plane was eventually limited solely to ocean-going crossing from London and Paris to New York, Washington D.C. and Barbados. Andrew O'reilly, Fox News, "Supersonic planes could make big comeback with quieter, 'low-boom' NASA aircraft," 5 Apr. 2018 Luxury Battle Flight testing now exceeds 1,800 hours for the Global 7000 and the plane has reached a top speed of Mach 0.995, just short of the sound barrier, Bombardier said Sunday. Frederic Tomesco, Bloomberg.com, "The Luxury Jet Industry Has a New Long-Range Champion," 15 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sound barrier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sound barrier

1939, in the meaning defined above

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Time Traveler for sound barrier

The first known use of sound barrier was in 1939

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