D defs.my
Entry 3 senses Webster, 1913

Catastrophe

/kət-ăs'-trəf-ē/ · Ca·tas·tro·phe · IPA /kəˈtæstɹəfi/
01 n. An event producing a subversion of the order or system of things; a final event, usually of a calamitous or disastrous nature; hence, sudde…
  1. 1.
    An event producing a subversion of the order or system of things; a final event, usually of a calamitous or disastrous nature; hence, sudden calamity; great misfortune.
    “The strange catastrophe of affairs now at London.” Bp. Burnet.
    “The most horrible and portentous catastrophe that nature ever yet saw.” Woodward.
  2. 2.
    The final event in a romance or a dramatic piece; a denouement, as a death in a tragedy, or a marriage in a comedy.
  3. 3.
    A violent and widely extended change in the surface of the earth, as, an elevation or subsidence of some part of it, effected by internal causes.(Geol.)