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orthoptics
orthopyroxene
orthorhombic
orthoscopic
orthostatic
orthotics
orthotropic
orthotropous
orthovoltage
orthovoltage therapy
ortolan
ORV
Orvieto
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oryx
orzo
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orthovoltage
or·tho·volt·age [ àwrthō vṓltij ]


noun 
Definition:
 
radiation for treating cancer: medium-voltage radiation energy used in the treatment of cancer
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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