- The definition of a disaster is an event, often sudden, that causes great damage or devastation.
An example of disaster is a tsunami.
A bridge destroyed by a natural disaster.
disaster definition by Webster's New World
Origin: Old French desastre ; from Italian disastro ; from Classical Latin dis- plush astrum ; from Classical Greek astron (see astral), star: from astrological notions: compare ill-starred
disaster definition by American Heritage Dictionary
- a. An occurrence causing widespread destruction and distress; a catastrophe.b. A grave misfortune.
- Informal A total failure: The dinner party was a disaster.
- Obsolete An evil influence of a star or planet.
Origin: 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 Indo-European roots).