Oxford Dictionary English tsunami noun noun BrE BrE//tsuːˈnɑːmi// ; NAmE NAmE//tsuːˈnɑːmi// (from Japanese) Coastlines and the sea, Natural disasters Add to my wordlistjump to other resultsan extremely large wave in the sea caused, for example, by an earthquake synonym tidal wave A tsunami early warning system was set up in Hawaii. The tsunami caused immeasurable damage. Wordfinderdisasteravalanche, cyclone, disaster, earthquake, eruption, flood, hurricane, landslide, tornado, tsunami Oxford Collocations DictionaryTsunami is used before these nouns: disaster, relief, survivor, … See full entry See related entries: Coastlines and the sea, Natural disasters Word Originlate 19th cent.: from Japanese, from tsu ‘harbour’ + nami ‘wave’.See tsunami in the Oxford Advanced American DictionaryCheck pronunciation: tsunami oxfordlearnersdictionaries.com