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Agency Dictionary

diagnostic

nounPronunciation: /ˌdaɪ.əɡˈnɒs.tɪk/

In Portuguese: diagnóstico

What does “diagnostic” mean?

An analytical determination or judgment identifying the underlying nature, cause, or source of a problem.

Etymology

From Greek diagnostikos, "able to distinguish", from diagignoskein, "to tell apart, to discern", formed from dia ("through, apart") and gignoskein ("to come to know"). English has used the word since the 17th century as an adjective and as a noun, at first for a symptom that identifies a disease. The usual noun for the judgment itself is diagnosis, from the same Greek verb; as a noun, diagnostic now mostly names a test or tool used to reach it.

Usage note

For the conclusion a doctor or analyst reaches, standard English says diagnosis (plural diagnoses). Diagnostic is chiefly an adjective (a diagnostic test) or the name of the test itself.

Synonyms

  • diagnosis
  • assessment
  • evaluation
  • analysis
  • finding

Often confused with

prognosis
A diagnosis says what the problem is; a prognosis says how it is likely to develop.

Word family

  • diagnosis
  • diagnose
  • diagnostics
  • diagnostician
  • diagnostically

Rhymes with

  • acrostic

Usage examples

  • As designers (communication doctors), clients come to us with a symptom (a problem), and when we give the diagnostic (the solution), it is rejected.

Concept

Source editions

Where this entry comes from in the Agency editorial.

Words of the same theme

stakeholdernoun
A person or group with an interest in a project or an organization and affected by its results, such as clients, managers, investors or users.
asynchronousadjective
Not occurring at the same time or coordinated simultaneously, describing workflows or interactions handled independently across time.
Baselinenoun
A clearly defined reference point or standard benchmark against which measurements and quality levels are compared. In industry analysis, it defines the current standard of work.
Bottlenecknoun
A point of congestion or obstruction that impedes progress or restricts flow in a production or organizational system.
Byproductnoun
A secondary, often unexpected result or incidental creation derived from an ongoing process or effort.
consultantnoun
A professional who provides expert advice, diagnostic analysis, and strategic guidance in a specific discipline or industry.
Dinosaurnoun
Informally, a person, organization, or established institution that has survived for a long time, sometimes perceived as traditional or resistant to change. In business, it highlights corporate longevity across eras.
Dispensarynoun
A specialized retail storefront or clinic legally authorized to dispense medical or recreational products, particularly cannabis. In branding, it represents the key point of consumer sale.
Entrepreneurnoun
An individual who founds and operates a business, assuming personal financial and operational risks in pursuit of opportunity. In creative disciplines, it defines studio owners.
Inventorynoun
A complete itemized catalog or aggregate stock of raw materials, parts, works in progress, and finished goods held in custody by a business enterprise for production or commercial sale.
Logisticsnoun
The detailed organization, planning, and practical implementation of complex operations involving the movement, transport, and maintenance of materials, goods, and personnel across distribution channels.
Monetizeverb
To convert an activity, audience, digital asset, or service into legal currency or financial revenue.

Also from these editions: terms

vocationnoun
A strong innate inclination or sense of purpose toward a particular career, craft, or calling.
wireframenoun
A skeletal visual guide that outlines the basic structure, hierarchy, and functionality of a user interface.
briefingnoun
A concise set of instructions or background information provided to guide a project or creative assignment.
autonomynoun
The condition or power of self-governance, independent decision-making, and freedom from external control.
concoctverb
To invent, devise, or fabricate something novel by combining various elements or ideas.
densitynoun
The quantity of mass, pixels, or information concentrated within a given unit of area or space.
hippocraticadjective
Relating to Hippocrates or the ethical medical code that prioritizes patient care and moral duty.
imposternoun
A person who practices deception under an assumed character, identity, or false professional claim.
metamodernadjective
Relating to a cultural paradigm that oscillates between modern sincerity and postmodern irony.
sedentaryadjective
Characterized by or requiring much sitting, little physical movement, or low levels of daily activity.
sketchnoun
A rapid, informal drawing or preliminary outline capturing the essential features of an idea.

Also from these editions: concepts

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Cite this entry

“diagnostic”. Agency Wiki, Agency Brasil. Published on November 11, 2026. https://www.agencybrasil.com/en/wiki/dictionary/diagnostic