predictor

/prɪˈdɪktər/
noun
  1. Something that shows or helps you guess what will happen in the future.
    • The stock market is not always a reliable predictor of the economy.
    • Good study habits are a strong predictor of academic success.
    • Dark clouds are often a predictor of rain.
  2. A person who says what will happen before it happens.
    • Some scientists are careful predictors of natural disasters.
    • The old fortune teller was known as a predictor of major events.
    • He was a poor predictor of election results.
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