noun (n)

• a prediction about how something (as the weather) will develop(noun.communication)

  Synonym:
  forecast
  

  source: wordnet30
• a prediction of the course of a disease(noun.act)

  Synonym:
  medical prognosis, prospect
  

  source: wordnet30
• The act or art of foretelling the course and termination of a disease; also, the outlook afforded by this act of judgment; as, the prognosis of hydrophobia is bad.(noun)

  source: webster1913