"prognostic" in the noun sense
1. omen, portent, presage, prognostic, prognostication, prodigy
a sign of something about to happen
"he looked for an omen before going into battle"
"prognostic" in the adjective sense
1. predictive, prognostic, prognosticative
of or relating to prediction having value for making predictions
Source: WordNet® (An amazing lexical database of English)
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