1a. An occurrence causing widespread destruction and distress; a catastrophe. b. A grave misfortune. 2.Informal A total failure: The dinner party was a disaster.3.Obsolete An evil influence of a star or planet.
ETYMOLOGY:
French désastre, from Italian disastro : dis-, pejorative pref. (from Latin dis-; see dis–) + astro, star (from Latin astrum, from Greek astron; see ster-3 in Appendix I).
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