Webster’s Revised Unabridged Dictionary · 1913
Climax
Cli′max (klī′măks), n. [L., from Gr. κλῖμαξ ladder, staircase, fr. κλίνειν to make to bend, to lean. See Ladder, Lean, v. i.] 1. Upward movement; steady increase; gradation; ascent. Glanvill.
2. (Rhet.) A figure in which the parts of a sentence or paragraph are so arranged that each succeeding one rises above its predecessor in impressiveness.
"Tribulation worketh patience, patience experience, and experience hope" — a happy climax. J. D. Forbes.
3. The highest point; the greatest degree.
We must look higher for the climax of earthly good. I. Taylor.
To cap the climax, to surpass everything, as in excellence or in absurdity. [Colloq.]