Meaning of DIAGNOSTIC in English

I. | ̷ ̷ ̷ ̷|nästik, -tēk adjective

Etymology: Greek diagnōstikos, from diagnōstos to be distinguished (from diagignōskein to distinguish) + -ikos -ic

1. : adapted to or used for the furthering of diagnosis : employing or marked by the methods of diagnosis : concerned with diagnosis

diagnostic reading tests

a diagnostic clinic

diagnostic social work

diagnostic information

2. : serving to distinguish, identify, or determine : distinctive: as

a. : characteristic of or indicating the presence of a particular disease

a diagnostic sign of yellow fever — American Guide Series: Louisiana

b. : distinctive of the species or other group to which an animal or plant belongs

a diagnostic character

c. : serving to identify a mineral or fossil

colored by impurities so that the property is not diagnostic — W.J.Miller

: indicative of the conditions of origin or the geologic age of a formation

some minerals are diagnostic of certain source rocks — F.J.Pettijohn

II. noun

( -s )


a. : the art or practice of diagnosis — often used in plural

his rare skill in diagnostics — T.B.Macaulay

b. : a diagnostic conclusion, opinion, or explanation

a false diagnostic

2. : a distinguishing mark

the true diagnostic of modern gentility is parasitism — G.B.Shaw

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.