Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

sea

play
noun \ˈsē\

Simple Definition of sea

  • : the salt water that covers much of the Earth's surface ( literary )

  • : 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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of sea

  1. 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 airb :  a body of salt water of second rank more or less landlocked <the Mediterranean sea>c :  oceand :  an inland body of water —used especially for names of such bodies <the Caspian Sea>

  2. 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. 3 :  something likened to the sea especially in vastness <a sea of faces>

  4. 4 :  the seafaring life

  5. 5 :  3mare

sea

adjective

at sea

  1. 1 :  on the sea; specifically :  on a sea voyage

  2. 2 :  lost, bewildered

to sea

  1. :  to or on the open waters of the sea

Examples of sea in a sentence

  1. the seas of the Southern Hemisphere

  2. <millions of plants and animals live in the sea>



Origin and Etymology of sea

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


First Known Use: before 12th century

Other Oceanography Terms



SEA Defined for Kids

sea

play
noun \ˈsē\

Definition of sea for Students

  1. 1 :  a body of salt water not as large as an ocean and often nearly surrounded by land

  2. 2 :  ocean 1

  3. 3 :  rough water <A high sea swept the deck.>

  4. 4 :  something suggesting a sea's great size or depth <The speaker looked out on a sea of faces.>





Seen and Heard

What made you want to look up sea? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

accommodate acommadate acommodate accomodate
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ