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misdiagnose

[mis-dahy-uh g-nohs, -nohz, mis-dahy-uh g-nohs, -nohz]
verb (used without object), mis·di·ag·nosed, mis·di·ag·nos·ing.
  1. to make an incorrect diagnosis.
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verb (used with object), mis·di·ag·nosed, mis·di·ag·nos·ing.
  1. to diagnose erroneously: to misdiagnose the nation's ills.
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Origin of misdiagnose

First recorded in 1925–30; mis-1 + diagnose
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for misdiagnose

misdiagnose

verb (tr)
  1. to diagnose (an illness or problem) wrongly or mistakenly
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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

Word Origin and History for misdiagnose

v.

1897, from mis- (1) + diagnose. Related: Misdiagnosed; misdiagnosing.

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Online Etymology Dictionary, © 2010 Douglas Harper