sound barrier

noun
|Updated on: 17 Jul 2018

Definition of sound barrier

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

Recent Examples of sound barrier from the Web

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.

First Known Use of sound barrier

1939

in the meaning defined above

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