catastrophes

/K AH0 T AE1 S T R AH0 F IY0 Z/
noun
  1. 1

    Any large and disastrous event of great significance

  2. 2

    A disaster beyond expectations

  3. 3

    The dramatic event that initiates the resolution of the plot; the dรฉnouement

  4. 4

    A type of bifurcation, where a system shifts between two stable states

Source: https://en.wiktionary.org/wiki/catastrophe, https://en.wiktionary.org/wiki/catastrophes