|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
diagnostic di·ag·nos·tic (dī'əg-nŏs'tĭk)
Of, relating to, or used in a diagnosis.
Serving to identify a particular disease; characteristic.
diagnostics The art or practice of medical diagnosis.
A symptom or a distinguishing feature serving as supporting evidence in a diagnosis.
An instrument or a technique used in medical diagnosis.