sea snake

noun

Synonyms of sea snakenext
1
: sea serpent
2
: any of numerous venomous aquatic chiefly viviparous elapid snakes of warm seas

Word History

First Known Use

1755, in the meaning defined at sense 1

Time Traveler
The first known use of sea snake was in 1755

Rhymes for sea snake

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Browse Nearby Words

sea snail
sea snake
sea snipe
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Cite this Entry

“Sea snake.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea%20snake. Accessed 26 Aug. 2026.

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Medical Definition

sea snake

noun
: any of numerous venomous snakes (subfamilies Hydrophiinae and Laticaudinae) inhabiting the tropical parts of the Pacific and Indian oceans

More from Merriam-Webster on sea snake

Thesaurus: All synonyms and antonyms for sea snake

Britannica.com: Encyclopedia article about sea snake

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