Indicating something future by signs or symptoms; foreshowing; aiding in prognosis; as, the prognostic symptoms of a disease; prognostic signs.(adjective)
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.(noun)
source: webster1913
adjective satellite (s)
of or relating to prediction; having value for making predictions(adj.all)