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sonogram
Sonoma
Sonoma Valley
Sonora
Sonoran Desert
sonority
sonorous
Sons of Freedom
sonsie
sonsy
soogan
soon
Sooner State
soot
sooth
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sonic barrier
son·ic bar·ri·er


noun 
Definition:
 
physics 
Same as  sound barrier
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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