relating to, useful for, or capable of predicting an outcome or event;
e.g. She watched for predictive signs so she could anticipate what would happen next.
(adjective)
(computing) based on, relating to, or involving a system in which data stored in an electronic device is used to predict what the user is doing to do next;
e.g. When typing a message, some programs show you predictive text to suggest the next words you might want to type.