Meaning

noun someone who makes predictions of the future (usually on the basis of special knowledge)

noun information that supports a probabilistic estimate of future events

noun a computer for controlling antiaircraft fire that computes the position of an aircraft at the instant of a shell's arrival

originEtymology tree English predict Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin -ātor Old French -eorbor. Middle English -our ▲ Latin -torlbor. English -or English predictor From predict + -or.

Etymology from Wiktionary, CC BY-SA 3.0