adj.
Pronunciation: - ' näs-tik
Variant: also di · ag · nos · ti · cal \ -ti-k ə l \
Function: adjective
Date: 1625
1 a : of, relating to, or used in diagnosis <a diagnostic tool> b : using the methods of or yielding a diagnosis < diagnostic tests>
2 : serving to distinguish or identify <a diagnostic feature>
– di · ag · nos · ti · cal · ly \ -ti-k( ə -)l ē \ adverb