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orthovoltage
orthovoltage therapy
ortolan
ORV
Orvieto
-ory
oryx
orzo
OS
Os
os (1)
os (2)
OSA
Osage (1)
Osage (2)
Osage orange
Osaka
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OS
OS


abbr 
Definition:
 
1. comput operating system
2. commerce out of stock
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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