diagnostic

[dahy-uhg-nos-tik]
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.
a.
a message output by a computer diagnosing an error in a computer program, computer system, or component device.
b.
a program or subroutine that produces such messages.

Origin:
1615–25; < Greek diagnōstikós, equivalent to diagnōst(ós) distinguished (akin to diágnōsis; see diagnosis) + -ikos -ic

diagnostically, adverb
postdiagnostic, adjective
prediagnostic, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
diagnostic (ˌdaɪəɡˈnɒstɪk)
 
adj
1.  of, relating to, or of value in diagnosis
 
n
2.  med any symptom that provides evidence for making a specific diagnosis
3.  a diagnosis
 
diagnostically
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

diagnostic
1620s (adj. and noun), from Gk. diagnostikos "able to distinguish," from diagnostos, verbal adj. from diagignoskein (see diagnosis). Related: Diagnostics.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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Example sentences
There are the medication issues, and there are also the diagnostic issues, and
  these are of course related.
Facial moustache mark and more powerful flight are diagnostic.
But automakers resist letting car owners access diagnostic tools.
Applicants called in for an interview will likely be asked to complete a
  diagnostic editing quiz.
Image for diagnostic
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