Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The sudden sharp increase in aerodynamic drag experienced by aircraft approaching the speed of sound. Also called sound barrier.
Wiktionary
WordNet 3.0
- n. the increase in aerodynamic drag as an airplane approaches the speed of sound
Examples
“I, on the other hand, am willing to risk going outside the sonic barrier to get those bioscans.”
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