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[awr-thoh-sis] /ɔrˈθoʊ sɪs/
noun, plural orthoses
[awr-thoh-seez] /ɔrˈθoʊ siz/ (Show IPA)
Medicine/Medical. the correction of orthopedic maladjustments.
an orthotic.
Origin of orthosis
1955-60; < Greek órthōsis a making straight, guidance, equivalent to orthō- (variant stem of orthoûn to straighten, verbal derivative of orthós straight) + -sis -sis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for orthosis


noun (pl) -ses (-siːz)
an artificial or mechanical aid, such as a brace, to support or assist movement of a weak or injured part of the body
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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orthosis in Medicine

orthosis or·tho·sis (ôr-thō'sĭs)
n. pl. or·tho·ses (-sēz)
An external orthopedic appliance that prevents or assists the movement of the spine or limbs.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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