n. 1 a thing that happens or takes place, esp. one of importance. 2 a the fact of a thing's occurring. b a result or outcome. 3 an item in a sports programme, or the programme as a whole. 4 Physics a single occurrence of a process, e.g. the ionization of one atom. 5 something on the result of which money is staked. at all events (or in any event) whatever happens. event horizon Astron. the gravitational boundary enclosing a black hole, from which no light escapes. in the event as it turns (or turned) out. in the event of if (a specified thing) happens. in the event that disp. if it happens that.
[ L eventus f. evenire event- happen (as E-, venire come) ]