1. A moment in a narrative when the conflict and tension peak for the audience. Often synonymous with crisis.
2. The third phase of dramatic structure in Freytag's pyramid.
3.Climax order: a sequential argument in which the last point is the most important and forceful (the opposite being anticlimax order).
4. In rhetoric, successive phrases building upon a previous one: e.g. Martin Luther King Jr.'s cumulative use of ‘I have a dream’.