prognostic

prog·nos·tic  (prg-nstk)

adj.

1. Of, relating to, or useful in prognosis.

2. Of or relating to prediction; predictive.

n.

1. A sign or symptom indicating the future course of a disease.

2. A sign of a future happening; a portent.

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[Middle English pronostik, prognosticating, omen, from Medieval Latin prognsticus, prognosticating, from Greek prognstikos, from prognsis, foreknowledge; see prognosis. N., from Latin prognsticum, omen, from Greek prognstikon, from neuter of prognstikos.]

Thesaurus

Noun	1.	prognostic - a sign of something about to happen; "he looked for an omen before going into battle" omen, portent, prognostication, presage, prodigy augury, foretoken, preindication, sign - an event that is experienced as indicating important things to come; "he hoped it was an augury"; "it was a sign from God" auspice - a favorable omen foreboding - an unfavorable omen death knell - an omen of death or destruction
Adj.	1.	prognostic - of or relating to prediction; having value for making predictions predictive, prognosticative prophetic, prophetical - foretelling events as if by supernatural intervention; "prophetic writings"; "prophetic powers"; "words that proved prophetic"