Word.ws English Dictionary

diagnostics

diagnostics is the plural of diagnostic.

Noun

diagnostics (countable and uncountable, plural diagnostics)

  1. (plural, singular) Diagnostic methods considered collectively.
    • Near-synonym: diagnosis
    • Diagnostics is the area in which this molecule is most useful, whereas it is not a treatment target in itself.
    Synonyms:
    diagnosis
  2. (plural, singular) The process of determining the state of or capability of a component to perform its function(s).
    • Diagnostics is the area in which the cost of hiring a factory-certified technician might easily pay for itself through downtime reduction.
    • The diagnostics were a nightmare, but we finally isolated the problem to a specific one of the many ECUs — of which this ridiculous design has at least fourteen that we know of.

Meaning of diagnostic

Noun

diagnostic (plural diagnostics)

  1. Any technique used in medical diagnosis.
  2. Any tool or technique used to find the root of a problem.
  3. That by which anything is known; a symptom.

See all 8 meanings of diagnostic

Synonyms of diagnostics

Forms of diagnostics

pluraldiagnostics

Origin of diagnostics

From diagnostic + -ics.

Words formed from diagnostics

Questions about diagnostics

What does diagnostics mean?
Diagnostics means diagnostic methods considered collectively.
What is diagnostics the plural of?
Diagnostics is the plural of diagnostic.
What part of speech is diagnostics?
Diagnostics is a noun.
What is the plural of diagnostics?
The plural of diagnostics is diagnostics.

Words near diagnostics in the dictionary

  1. diagnosticians
  2. diagnosticities
  3. diagnosticity
  4. diagnostick
  5. diagnosticks
  6. diagnostics
  7. diagnoze
  8. diagometer
  9. diagometers
  10. diagonal
  11. diagonal argument

Source and license

Adapted from Wiktionary: diagnostics (page history and authors); diagnostic (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Wodencafe-diagnostics.wav.

Cite this entry: “diagnostics.” Word.ws, https://word.ws/diagnostics. Based on Wiktionary, CC BY-SA 4.0.