vt to prognosticate.
2. prognostic ·adj a sign or symptom indicating the course and termination of a disease.
3. prognostic ·adj indicating something future by signs or symptoms; foreshowing; aiding in prognosis; as, the prognostic symptoms of a disease; prognostic signs.
4. prognostic ·adj that which prognosticates; a sign by which a future event may be known or foretold; an indication; a sign or omen; hence, a foretelling; a prediction.