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Atlantis

American  
[at-lan-tis] / ætˈlæn tɪs /

noun

  1. a legendary island, first mentioned by Plato, said to have existed in the Atlantic Ocean west of Gibraltar and to have sunk beneath the sea, but linked by some modern archaeologists with the island of Thera, the surviving remnant of a much larger island destroyed by a volcanic eruption c1500 b.c.

Atlantis British  
/ ətˈlæntɪs /

noun

  1. (in ancient legend) a continent said to have sunk beneath the Atlantic Ocean west of the Straits of Gibraltar

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Atlantis Cultural  

  1. A kingdom in classical mythology. According to legend, it was once an island in the Atlantic Ocean, was swallowed up in an earthquake, and is now covered by the sea.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Aquaventure Waterpark at the high-end Atlantis hotel on Dubai’s Palm, a man-made archipelago, offered complimentary tickets to residents and visitors while other hotels promoted lavish staycation packages with dining and spa options.

From The Wall Street Journal • Mar. 17, 2026

Claudine Schwartz, a 49-year-old French tourist staying at the Royal Atlantis on The Palm, told AFP that she heard explosions and saw plumes of smoke Saturday.

From Barron's • Mar. 1, 2026

According to submissions made to the court by Adichie's legal team, Nkanu had initially been admitted to Atlantis Hospital in Lagos with what was described as a worsening but mild illness.

From BBC • Feb. 26, 2026

She returned to Earth with the STS-117 crew aboard space shuttle Atlantis.

From Science Daily • Jan. 22, 2026

Nineteenth- century writers attributed the mound complexes to, among others, the Chinese, the Welsh, the Phoenicians, the lost nation of Atlantis, and various biblical personages.

From "1491" by Charles C. Mann

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.