11 letters · 15 points in Scrabble
noun a final climactic stage
noun (astronomy) a heavenly body's highest celestial point above an observer's horizon
noun the decisive moment in a novel or play
originBorrowed from French culmination, from culminer, or from Medieval Latin culminatus + -tion. Morphologically culminate + -ion.
Etymology from Wiktionary, CC BY-SA 3.0