As a noun predictor
is something that anticipates, predicts or foretells.
As an adjective predictory is
serving to predict; predictive.
predictor
English
Noun
(
en noun)
Something that anticipates, predicts or foretells.
:The rain fall in April is a predictor for the number of mosquitoes in May.
:The predictor in the traffic lights control circuit tries to figure out how fast to change the lights.