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nasal cavity
na·sal cav·i·ty (plural na·sal cav·i·ties)


noun 
Definition:
 
hollow area forming inner nose: either of the two open spaces, located between the floor of the cranium and the roof of the mouth, that form the inner nose
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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