✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

tsunami

noun

tsu·​na·​mi (t)su̇-ˈnä-mē How to pronounce tsunami (audio)
plural tsunamis also tsunami
: a great sea wave produced especially by submarine earth movement or volcanic eruption : tidal wave
tsunamic adjective

Examples of tsunami in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
No tsunami was expected after that quake. Anna Skinner, MSNBC Newsweek, 27 Nov. 2025 Patients are the nexus between responsible health care and a dangerous technologic tsunami. Cory Franklin, Twin Cities, 23 Nov. 2025 Japan’s devastating 2011 earthquake and tsunami caused water within the plant to be contaminated with highly radioactive material. Jerome Taylor, CNN Money, 19 Nov. 2025 In Thailand, the Chinese export tsunami has precipitated a crisis among smaller firms making car parts, electrical equipment, and consumer goods, stoking fears of deindustrialization. Andy Browne, semafor.com, 13 Nov. 2025 See All Example Sentences for tsunami

Word History

Etymology

Japanese, from tsu harbor + nami wave

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of tsunami was in 1896

Browse Nearby Words

Cite this Entry

“Tsunami.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tsunami. Accessed 30 Nov. 2025.

Kids Definition

tsunami

noun
tsu·​na·​mi (t)su̇-ˈnäm-ē How to pronounce tsunami (audio)
: a great sea wave produced especially by an earthquake or volcanic eruption under the sea : tidal wave
Etymology

Japanese, from tsu "harbor" + nami "wave"

More from Merriam-Webster on tsunami

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!