Definify.com

Webster 1913 Edition

Adj.

[L.

praedictivus

Foretelling; prophetic; foreboding.

–

Pre-dict′ive-ly

adv.

Adj.

Foretelling; prophetic.

See also: prédictive

predictive ‎(comparative more predictive, superlative most predictive)

Useful in predicting.
The amount of rain in April is predictive of the number of mosquitoes in May.
(computing) Describing a predictor.
(Medicine) Expressing the expected accuracy of a statistical measure or of a diagnostic test