say it: kat-uh-STRAH-fik
catastrophic is an adjective meaning "extremely harmful; bringing physical or financial ruin". It is pronounced /ˌkætəˈstɹɑfɪk/ — kat-uh-STRAH-fik. It carries one recorded sense.
Definitions, synonyms and semantic relations for catastrophic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.