Definition of catastrophic adjective from the Oxford Advanced Learner's Dictionary

     

    catastrophic

     adjective
    adjective
    BrE BrE//ˌkætəˈstrɒfɪk//
     
    ; NAmE NAmE//ˌkætəˈstrɑːfɪk//
     
     
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  1. 1(of a natural event) causing a lot of damage and suffering synonym disastrous a catastrophic earthquake/flood/wildfire
  2. 2causing a lot of problems for people synonym disastrous a catastrophic failure/collapse/defeat (US English) a catastrophic illness (= one that costs a very large amount to treat)