1

diagnostic

adjective di·ag·nos·tic \ -ˈnäs-tik \
variants: or less commonly diagnostical play \-ti-kəl\

Definition of diagnostic

1 a :of, relating to, or used in diagnosis
  • a diagnostic tool
b :using the methods of or yielding a diagnosis
  • diagnostic tests
2 :serving to distinguish or identify
  • a diagnostic feature

diagnostically

play \-ti-k(ə-)lē\ adverb

Examples of diagnostic in a Sentence

  1. Ultrasound is now widely used as a diagnostic tool.

  2. One important diagnostic feature of this condition is a mild rash.

Recent Examples of diagnostic from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diagnostic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of diagnostic

1625


2

diagnostic

noun

Definition of diagnostic

1 :the art or practice of diagnosis often used in plural
2 :a distinguishing mark

diagnostician

play \-(ˌ)näs-ˈti-shən\ noun

Examples of diagnostic in a Sentence

  1. the thesis that moral decline is the infallible diagnostic of a decadent society

Recent Examples of diagnostic from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diagnostic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of diagnostic

1625


DIAGNOSTIC Defined for English Language Learners

diagnostic

adjective

Definition of diagnostic for English Language Learners

  • : of, relating to, or used in diagnosis : used to help identify a disease, illness, or problem


Medical Dictionary

1

diagnostic

adjective di·ag·nos·tic \ -ˈnäs-tik \
variants: also diagnostical play \-ti-kəl\

medical Definition of diagnostic

1 :of, relating to, or used in diagnosis
2 :using the methods of or yielding a diagnosis
  • a diagnostic service
  • diagnostic properties

diagnostically

play \-ti-k(ə-)lē\ adverb

2

diagnostic

noun

medical Definition of diagnostic

:the art or practice of diagnosis often used in plural


Seen and Heard

What made you want to look up diagnostic? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

pleasing or sweet sound

Get Word of the Day daily email!

Test Your Vocabulary

Forms of Government Quiz

  • knupfer-painting-solon-before-croesus
  • A gerontocracy is rule by:
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!