Poseidon

noun

Po·​sei·​don pə-ˈsī-dᵊn How to pronounce Poseidon (audio)
: the Greek god of the sea compare neptune

Examples of Poseidon in a Sentence

Recent Examples on the Web
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The base is home to four squadrons of Typhoon fighter jets as well as the UK’s fleet of nine P-8 Poseidon aircraft, which the Royal Air Force calls the world’s best anti-submarine platform. Alan Crawford, Bloomberg, 20 Apr. 2026 The petite Thaleria Spa's magnesium pool proved unexpectedly restorative after a day trip to Balos Beach, while the main pool—an oval worthy of Poseidon's approval—is the property's social nucleus by day, stargazing sanctuary by night. Travel + Leisure Editors, Travel + Leisure, 15 Apr. 2026 In a constellation of Los Angeles tacos, the Poseidon, like the entirety of the Evil Cooks experience, is one of one. Jenn Harris, Los Angeles Times, 5 Mar. 2026 Based on a commercial Boeing 737 airframe, the twin-engine Navy jets, named Poseidon, are used for anti-submarine warfare as well as intelligence, surveillance and reconnaissance. Brad Lendon, CNN Money, 2 Mar. 2026 See All Example Sentences for Poseidon

Word History

Etymology

Latin, from Greek Poseidōn

First Known Use

1811, in the meaning defined above

Time Traveler
The first known use of Poseidon was in 1811

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Cite this Entry

“Poseidon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Poseidon. Accessed 2 May. 2026.

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