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orthophosphate
orthophosphoric acid
orthopsychiatry
orthopteran
orthopterous
orthoptics
orthopyroxene
orthorhombic
orthoscopic
orthostatic
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orthovoltage therapy
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orthographic
or·tho·graph·ic [ àwrthə gráffik ] or or·tho·graph·i·cal [ àwrthə gráffik'l ]


adjective 
Definition:
 
1. relating to spelling: relating to the study of spelling
2. correct in spelling: correctly spelled
3. mathematics made up of vertical lines: composed of vertical lines

or·tho·graph·i·cal·ly adverb
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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