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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



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

Rhymes with sea

b, be, bee, c, cay, cee, Cree, d, dee, Dee, dree, e, fee, flea, flee, free, g, gee, ghee, glee, gree, he, key, Key, knee, lea, lee, me, mi, p, pea, pee, plea, pree, quay, re, Rhee, scree, see, she, si, ski, spree, sri, t, tea, tee, the, thee, three, ti, tree, twee, Twi, v, vee, we, wee, whee, ye, z, zee

SEA Defined for Kids


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).


articulated in the throat

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