D defs.my
Entry 1 sense Webster, 1913

Climactic

/klīm-ăk'-tĭk/ · Cli·mac·tic · IPA /ˌklaɪˈmæk.tɪk/
01 a. Of or pertaining to a climax; forming, or of the nature of, a climax, or ascending series.
  1. 1.
    Of or pertaining to a climax; forming, or of the nature of, a climax, or ascending series.
    “A fourth kind of parallelism . . . is still sufficiently marked to be noticed by the side of those described by Lowth, viz., climactic parallelism (sometimes called “ascending rhythm”).” — S. R. Driver.