#1 catastrophe n. [calamity, disaster, tragedy, cataclysm] an event resulting in great loss and misfortune; "the whole city was affected by the irremediable calamity"; "the earthquake was a disaster". wn
#2 catastrophe n. [disaster] a state of extreme (usually irremediable) ruin and misfortune; "lack of funds has resulted in a catastrophe for our school system"; "his policies were a disaster". wn
#3 catastrophe n. [cataclysm] a sudden violent change in the earth's surface. wn
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