DIAGNOSTIC
diagnostic, symptomatic
(adjective) characteristic or indicative of a disease; “a diagnostic sign of yellow fever”; “a rash symptomatic of scarlet fever”; “symptomatic of insanity”; “a rise in crime symptomatic of social breakdown”
diagnostic
(adjective) concerned with diagnosis; used for furthering diagnosis; “a diagnostic reading test”
Source: WordNet® 3.1
Adjective
diagnostic (comparative more diagnostic, superlative most diagnostic)
Of, or relating to diagnosis.
(medicine) Characteristic of a particular disease.
Serving to indicate or specify a particular item or thing within a group of similar things.
Hyponyms
• pathognomonic
Noun
diagnostic (plural diagnostics)
Any technique used in medical diagnosis.
(computing) Any tool or technique used to find the root of a problem.
That by which anything is known; a symptom.
Source: Wiktionary
Di`ag*nos"tic, a. Etym: [Gr. diagnostique.]
Definition: Pertaining to, or furnishing, a diagnosis; indicating the
nature of a disease.
Di`ag*nos"tic, n.
Definition: The mark or symptom by which one disease is known or
distinguished from others.
Source: Webster’s Unabridged Dictionary 1913 Edition