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diagnostic

[dahy-uh g-nos-tik] /ˌdaɪ əgˈnɒs tɪk/
adjective
1.
of, pertaining to, or used in diagnosis.
2.
serving to identify or characterize; being a precise indication.
noun
3.
diagnosis (def 1).
4.
a symptom or characteristic of value in diagnosis.
5.
Medicine/Medical. a device or substance used for the analysis or detection of diseases or other medical conditions.
6.
Computers.
  1. a message output by a computer diagnosing an error in a computer program, computer system, or component device.
  2. a program or subroutine that produces such messages.
Origin
1615-1625
1615-25; < Greek diagnōstikós, equivalent to diagnōst(ós) distinguished (akin to diágnōsis; see diagnosis) + -ikos -ic
Related forms
diagnostically, adverb
postdiagnostic, adjective
prediagnostic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for prediagnostic

diagnostic

/ˌdaɪəɡˈnɒstɪk/
adjective
1.
of, relating to, or of value in diagnosis
noun
2.
(med) any symptom that provides evidence for making a specific diagnosis
3.
a diagnosis
Derived Forms
diagnostically, adverb
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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Word Origin and History for prediagnostic

diagnostic

1620s (adjective and noun), from Greek diagnostikos "able to distinguish," from diagnostos, verbal adjective from diagignoskein (see diagnosis). Related: Diagnostics.

Online Etymology Dictionary, © 2010 Douglas Harper
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prediagnostic in Medicine

diagnostic di·ag·nos·tic (dī'əg-nŏs'tĭk)
adj.

  1. Of, relating to, or used in a diagnosis.

  2. Serving to identify a particular disease; characteristic.

n.
  1. diagnostics The art or practice of medical diagnosis.

  2. A symptom or a distinguishing feature serving as supporting evidence in a diagnosis.

  3. An instrument or a technique used in medical diagnosis.

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