Predictor

pre·dict  (pr-dkt)

v. pre·dict·ed, pre·dict·ing, pre·dicts

v.tr.

To state, tell about, or make known in advance, especially on the basis of special knowledge.

v.intr.

To foretell something; prophesy.

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[Latin praedcere, praedict- : prae-, pre- + dcere, to say; see deik- in Indo-European roots.]

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pre·dicta·bili·ty n.

pre·dicta·ble adj.

pre·dicta·bly adv.

pre·dictive adj.

pre·dictive·ly adv.

pre·dictive·ness n.

pre·dictor n.

Synonyms: predict, call, forecast, foretell, prognosticate
These verbs mean to tell about something in advance of its occurrence by means of special knowledge or inference: predict an eclipse; couldn't call the outcome of the game; forecasting the weather; foretold events that would happen; prognosticating a rebellion.

Thesaurus

Noun	1.	predictor - someone who makes predictions of the future (usually on the basis of special knowledge) forecaster, prognosticator, soothsayer astrologer, astrologist - someone who predicts the future by the positions of the planets and sun and Moon fortune teller, fortuneteller - a person who foretells your personal future illusionist, seer, visionary - a person with unusual powers of foresight
	2.	predictor - information that supports a probabilistic estimate of future events; "the weekly bulletin contains several predictors of mutual fund performance" information - knowledge acquired through study or experience or instruction
	3.	predictor - a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival ack-ack, ack-ack gun, antiaircraft, antiaircraft gun, pom-pom, flack, flak - artillery designed to shoot upward at airplanes computer, computing device, computing machine, data processor, electronic computer, information processing system - a machine for performing calculations automatically