Eventus

2. In old English from a cause. Ereutus eventus quia ex causa from a cause, and they cause.

Lat. [from evenire, to come out, or come from.] An event; a thing which happens from a cause. Eventus est qui ex causa sequitur, et dicuntur eventus quia ex causa eveniunt; an event is that which follows from a cause, and they are called events because they come out of a cause. 9 Co. 81 b.