Predetermine means to decide or choose something before it actually happens.
When we predetermine the outcome of an event or situation, we make a decision about what will happen before it even occurs. This can be seen in situations like planning a surprise party - you might predetermine who will give the surprise speech and when they'll deliver it. It's also used in scientific research where scientists might predetermine the course of their experiment to avoid bias or influence on the results. In general, predetermining helps us prepare for what's coming next by making informed choices ahead of time.
To determine or decide in advance.
