1
a
: 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
2
a
: 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
5
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
As the buttresses disintegrate, more ice from the land can flow into the sea, hastening sea level rise.
—
Tom Yulsman, Discover Magazine, 8 Nov. 2024
Did Jonathan whisper for his own mum as the sea battered him?
—Amanda Whiting, Vulture, 8 Nov. 2024
Additionally, a ground-floor theater faces the sea.
—Adam Williams, New Atlas, 4 Nov. 2024
Initially, Shipshape Island, the team’s floating headquarters, sails the seas at an achingly slow pace.
—Josh Broadwell, Rolling Stone, 4 Nov. 2024
See all Example Sentences for sea 
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Tom Yulsman, Discover Magazine, 8 Nov. 2024
Did Jonathan whisper for his own mum as the sea battered him?
—Amanda Whiting, Vulture, 8 Nov. 2024
Additionally, a ground-floor theater faces the sea.
—Adam Williams, New Atlas, 4 Nov. 2024
Initially, Shipshape Island, the team’s floating headquarters, sails the seas at an achingly slow pace.
—Josh Broadwell, Rolling Stone, 4 Nov. 2024
See all Example Sentences for sea
Articles Related to sea
Dictionary Entries Near sea
Cite this Entry
“Sea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sea. Accessed 22 Nov. 2024.
Copy CitationKids Definition
sea
noun1
a
: a great body of salty water that covers much of the earth
also
: the waters of the earth
b
: a body of salt water not as large as an ocean
the Mediterranean Sea
c
d
: an inland body of water either salt or fresh
the Sea of Galilee
2
: rough water
a high sea swept the deck
3
: something suggesting the sea (as in great size or depth)
a golden sea of wheat
4
: a life involving marine travel
hoped to make a career of the sea
5
sea
adjective
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