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Also available:
World English Dictionary
Dictionnaire Français
sonic boom
son·ic boom
(
plural
son·ic booms
)
noun
Definition:
loud boom from shock waves:
a noise heard as a loud boom at ground level resulting from the shock waves created by an aircraft flying above the speed of sound
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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