predictor
n. countable B2 Upper Intermediate US //pɹɪˈdɪktɝ// UK //pɹɪdˈɪktɐ// pre·dic·tor
n. something that helps you guess or know what will happen in the future.
n. a variable or factor that provides a reliable basis for forecasting a future outcome or event.
Good grades are often a predictor of future success.
Economists look at consumer spending as a key predictor of the country's financial health for the next quarter.
While high blood pressure is a known predictor of heart disease, researchers are investigating whether genetic markers might offer a more precise early warning for at-risk patients.
Usage
Often followed by the preposition 'of' to indicate the outcome being forecasted.