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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Nearly two decades later, Poseidon is still seeking investors. Bill Gourgey, Popular Science, 2 July 2026 In retaliation, Poseidon whips up the ocean, shredding sails, cracking oars, sweeping Odysseus and his men overboard. David Denby, New Yorker, 21 June 2026 The investment supports sustained readiness for the P-8A Poseidon’s anti-submarine warfare and maritime surveillance missions as threat environments continue to develop. Bojan Stojkovski, Interesting Engineering, 21 June 2026 On Friday, June 19, authorities said in a release that the Royal New Zealand Air Force's (RNZAF) P-8A Poseidon crew found the man in his 13-foot aluminum rowboat that morning. Gabrielle Rockson, PEOPLE, 19 June 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 5 Jul. 2026.

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