Search Dictionary
Definition of diagnostics

diagnostics

/ˌdaɪ.əɡˈnɑː.stɪks/
di · ag · nos · tics
Adverb:diagnostically
•
Plural:diagnostics
•
Adjective:diagnostic
JUMP TO:

diagnostics Lexical Profile

diagnostics Game Scores & Validity

• noun

1

Computer programs, automated routines, or instruments used to detect and analyze faults or malfunctions in hardware, software, or machinery.

Example

"The technician ran system diagnostics to determine why the server kept crashing."

2

The practice, technique, or branch of medicine concerned with the diagnosis of illnesses and medical conditions.

Example

"Advances in molecular diagnostics have significantly improved the early detection of genetic disorders."

Synonyms
View all synonyms for diagnostics

Word Nuance & Usage

When referring to the medical or scientific discipline of diagnosis, 'diagnostics' is treated as a singular mass noun (e.g., 'diagnostics is an evolving field'); when referring to computer tests, routines, or specific medical tools, it takes a plural verb.

• Rhymes for diagnostics

• Nearby Words

diagnosis
diagnostic
diagnostician
diagnostics
diagonal
diagonally
diagram

Word Origin & Etymology

Derived from Ancient Greek diagnostikos ('able to distinguish'), from diagignoskein ('to discern or distinguish'), combining dia- ('apart') and gignoskein ('to know').

Cite this Entry

Wordmom. (2026). Definition of Diagnostics. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/diagnostics
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Word Games & Solvers
Word FinderScrabble Word FinderWords With Friends CheatWordle SolverAnagram Solver
Dictionary & Reference
DictionarySynonymsAntonymsWords
Community
Contact UsEditorial PolicyPrivacy PolicyTerms and Conditions
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.