Climax
In a work of fiction, the climax is the point of highest drama, generally occurring approximately two-thirds to three-fourths of the way through the text or performance, after the rising action and before the falling action. It is the moment of greatest danger for the hero(s) and usually consists of a seemingly-unfixable failure to reach the goal, followed by a near-miraculous recovery.
In the biological sciences, a climax is the presumed end point of a successional sequence, at which a biological system, a community, or a soil has reached a steady state. In ecology, Clements' climax theory has been largely replaced by disturbance and gap-phase theories.
See also ecosystem.
For sexual climax, see orgasm.
The Climax locomotive was a type of geared steam locomotive.