\ ˈsē How to pronounce sea (audio) \

Definition of sea

1a : a great body of salt water that covers much of the earth broadly : the waters of the earth as distinguished from the land and air
b : a body of salt water of second rank more or less landlocked the Mediterranean sea
c : ocean
d : an inland body of water used especially for names of such bodies the Caspian Sea
2a : surface motion on a large body of water or its direction also : a large swell or wave often used in plural heavy seas
b : the disturbance of the ocean or other body of water due to the wind
3 : something likened to the sea especially in vastness a sea of faces
4 : the seafaring life
at sea
1 : on the sea specifically : on a sea voyage
to sea
: to or on the open waters of the sea

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Other Words from sea

sea adjective

Examples of sea in a Sentence

the seas of the Southern Hemisphere millions of plants and animals live in the sea
Recent Examples on the Web On Sunday, its People's Liberation Army said a Chinese aircraft carrier group recently conducted annual exercises in the busy sea lanes. Jim Gomez, Star Tribune, "Philippines protests `blocking' of its patrol ships by China," 3 May 2021 Will future electric vehicles be powered by deep-sea metals? Sidney Fussell, Wired, "A Border Town Confronts the Reality of Police Surveillance," 3 May 2021 The duo also recovered scientific samples of bacterial mats and deep-sea anemones. Wayne Baker, The Enquirer, "Ohio businessman and entrepreneur discovers 'scientific gold' during historic ocean dives," 3 May 2021 The group also helped organize sea planes and used its social media platforms to organize search efforts, gather supplies and get resources needed to help in the search. Kay Jones, CNN, "United Cajun Navy suspends coordinated search efforts for missing Seacor crew members," 2 May 2021 The group at Milagra Ridge had started their day at the Pillar Point tide polls at Half Moon Bay, where they were jazzed to spot an octopus and a wide variety of nudibranchs — more commonly known as sea slugs. Carolyn Said, San Francisco Chronicle, "Bay Area citizen scientists find critters, plants in global biodiversity challenge," 2 May 2021 According to the Italian Interior Ministry, as of Friday, 9,000 migrants had reached Italy by sea this year ., "Over 800 migrants rescued at sea head to Italy," 1 May 2021 Head for the waterfront in this walkable city, and enjoy Maryland's famous crabs and fresh seafood along with cooling sea breezes. Patricia Doherty, Travel + Leisure, "Best Places to Travel in July," 30 Apr. 2021 With the extra space, the line is giving the new ship some unique features including the first restaurant at sea for celebrity Chef Daniel Boulud, famous for eponymous venues in New York, Washington and elsewhere including Palm Beach’s Cafe Boulud. Richard Tribou,, "Celebrity Cruises amps up Florida-bound ship to be largest ever in the fleet," 30 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sea.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sea

before the 12th century, in the meaning defined at sense 1a

History and Etymology for sea

Middle English see, from Old English ; akin to Old High German sea, Goth saiws

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Time Traveler for sea

Time Traveler

The first known use of sea was before the 12th century

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Statistics for sea

Last Updated

5 May 2021

Cite this Entry

“Sea.” Dictionary, Merriam-Webster, Accessed 9 May. 2021.

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More Definitions for sea



English Language Learners Definition of sea

: the salt water that covers much of the Earth's surface
: a large body of water that is part of the sea or that has land around part or all of it
: an area of the sea


\ ˈsē How to pronounce sea (audio) \

Kids Definition of sea

1 : a body of salt water not as large as an ocean and often nearly surrounded by land
3 : rough water A high sea swept the deck.
4 : something suggesting a sea's great size or depth The speaker looked out on a sea of faces.

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Comments on sea

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