Foreshowing; indicating something future by signs or symptoms; as the prognostic symptoms of a disease; prognostic signs.

In medicine, the judgment formed concerning the event of a disease by means of the symptoms.

Something which foreshows; a sign by which a future event may be known or foretold. In medicine, a sign or symptom indicating the event of a disease. The appearance of the tongue--is of considerable importance as a prognostic.

A foretelling; prediction,