flash flood also flash·flood (fl sh fl d)n. A sudden flood of great volume, usually caused by a heavy rain. |
flash flood
n
(Earth Sciences / Physical Geography) a sudden short-lived torrent, usually caused by a heavy storm, esp in desert regions
| flash flood (flsh) A sudden, localized flood of great volume and short duration, typically caused by unusually heavy rain in a semiarid area. Flash floods can reach their peak volume in a matter of a few minutes and often carry large loads of mud and rock fragments. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  flash flood - a sudden local flood of great volume and short durationflood, inundation, alluvion, deluge - the rising of a body of water and its overflowing onto normally dry land; "plains fertilized by annual inundations" floodhead - a wall of water rushing ahead of the flood; "we were lucky to be safe when the floodheads hit" |
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