Definition of sea in English:



  • 1The expanse of salt water that covers most of the earth's surface and surrounds its land masses.

    ‘a ban on dumping radioactive wastes in the sea’
    [mass noun] ‘rocky bays lapped by vivid blue sea’
    [as modifier] ‘a sea view’
    • ‘The waves of the deep blue sea lapped softly at the shore.’
    • ‘Whereas estimates of phytoplankton were initially too high, sea ice primary production estimates were initially too low.’
    • ‘The lone wooden bench overlooking the vast sea beckoned her for company.’
    • ‘Facing the dark open sea and silent of traffic, the village at night is a bubble of conviviality.’
    • ‘They look for trilobites and fossilised sea creatures that are preserved in the stone along the path, easily spottable for amateur fossil hunters.’
    • ‘On Tybee Island, it was estimated that 43.82 acres of land would be lost to the sea.’
    • ‘They may remember the hot salty sea, their ancestral home, their first food.’
    • ‘Fiji's natural beauty white sand beaches, calm blue seas and nodding palm trees - remains a considerable pull.’
    • ‘For Rachel, the vastness of the sea brings comfort and reassurance - it's a constant, she says, in a constantly changing world, and its great expanse puts our problems into perspective.’
    • ‘And I immediately felt that inside me was this inland ocean with its population of one, this little sea mammal who was swimming around.’
    • ‘Yields of herring, sea urchin and rockfish also dropped dramatically during this season.’
    • ‘She breathed in and smelt the salty sea mixed with a sent of spring.’
    • ‘Sadly, the most easily-attainable sources for iodine are iodized salt and sea products, both of which can be taboo for pregnant women.’
    • ‘The jet started to rotate and face the open sea.’
    • ‘New standards to help safeguard the welfare of animals transported by road and sea have been agreed at a major conference in Paris.’
    • ‘I looked down, and saw a small island in the middle of the turquoise sea.’
    • ‘Although, ironically, the lack of rain in recent years has made the problem worse, as winter flows can help flush sediments through the system and out to sea.’
    • ‘But the lure of the sea was too much and he joined the family as they trawled the beaches.’
    • ‘I walked over to an east-facing balcony that overlooks the sea far below.’
    • ‘The coastline is made up of various shades of gold set in a translucent turquoise sea.’
    • ‘They swim in inland waters and lakes and never taste the salty sea.’
    marine, ocean, oceanic
    salt, saltwater, seawater, watery, pelagic
    ocean-going, seagoing, seafaring, afloat
    maritime, naval, nautical
    thalassic, pelagian
    the waves
    View synonyms
    1. 1.1[often in place names]A roughly definable area of the sea.
      ‘the Black Sea’
      • ‘Population genetic structures of the mackerel (Scomber scombrus) and chub mackerel (Scomber japonicus) were studied in the Mediterranean Sea.’
      • ‘Between screens and building are long thin pools, symbolic of the three seas that surround Anatolia.’
      • ‘The goal of Save the North Sea project has been to reduce marine litter in the North Sea by changing the attitudes and behaviour of the people using the area.’
      • ‘The White Sea is an inlet of the Barents Sea on the northwest coast of Russia.’
      • ‘The audience could imagine the various routes leading to the edge of the Atlantic, Baltic and Mediterranean seas, as though we stood on a contour model with rivers and mountains.’
    2. 1.2[in place names]A large lake.
      ‘the Sea of Galilee’
      • ‘Since the beginning of time, the Sea of Galilee has provided its fishermen with a plentiful source of sustenance.’
      • ‘Once the world's fourth largest lake, the mighty Aral Sea is now in its death throes.’
      • ‘Surely the simplest answer to the Dead Sea saltiness question is that it is really a lake which has no outlet.’
    3. 1.3[mass noun]Used to refer to waves as opposed to calm sea.
      ‘there was still some sea running’
      • ‘Using it first time in a crowded boat in a rough sea is a recipe for disaster.’
      • ‘My walk is an inelegant bob… as if navigating a choppy sea.’
    4. 1.4Large waves.
      ‘the lifeboat met seas of thirty-five feet head-on’
      • ‘However, the flagship was soon buffeted by very heavy seas, and began taking on water.’
      • ‘Weather has also contributed to the seclusion and peculiarity of the Azores - stormy winter seas often prevent access to the smaller islands even by air for days at a time.’
      • ‘While the seas can be savage, Graham loves the power of the ocean, the wildness of the local landscape and, in particular, the clarity of the light in this part of Scotland.’
      • ‘Two Plexiglas dioramas of a boat on storm-tossed seas depicted Ernest Shackleton's ill-fated South Pole expedition of 1914.’
      • ‘The farmer is left to trawl the seas, casting a net for profit in an export-driven market.’
      • ‘But the seas are beginning to part, and several paths forward are appearing before you.’
      • ‘Fish were recorded thrown ashore in all tidal phases and there was little evidence rough seas were responsible.’
      • ‘He captures the seas as well as the tranquil horizons in his works.’
      • ‘At 6:30 the next morning, the seas were finally calm, and we pulled into the port of New York.’
      • ‘The winds that night blew a full gale, and they piled up seas bigger than I could ever have hoped to handle.’
      • ‘The artist's rising seas appear to be made of metal, stone, earth and glass, as well as water.’
    5. 1.5[count noun]A vast expanse or quantity of something.
      ‘she scanned the sea of faces for Stephen’
      • ‘We appreciate the flavorful food, recognizing in the candlelight the small, spicy leaves we snipped from a sea of greens that bright morning.’
      • ‘Shot in Brazil at a dozen different games, this 8 1/2-minute video consists of seas of rapturous fans in the montage of color that Dean often features in his works.’
      • ‘If it does not, we shall descend into the kind of world that is already suggested in some US and Asian cities, with islands of vulgar opulence isolated in seas of mediocrity - or worse.’
      • ‘After wading around in difficult seas of theory and producing some charming and intriguing drawings, he made his name with the Jewish Museum in Berlin.’
      • ‘As we approached the town, I was shocked to see a sea of red from horizon to horizon.’
      • ‘Others will find a healthful haven among a sea of fortified yogurts and dairy beverages.’
      • ‘It was great fun to watch a sea of red and white jogging around the town.’
      • ‘We just get new business parks surrounded by seas of cars and a trim of polite landscaping just like anywhere else.’
      • ‘From freezers and hardening tunnels to compressors, evaporators and air handling units, a sea of chilling and freezing equipment is available to the dairy industry.’
      • ‘And in the past few weeks, something completely different has emerged: ballpoint on canvas, seas of tiny reptile-like scales, swirling away in the artist's characteristic fashion.’
      • ‘From the steps of the Lincoln Memorial you saw a sea of humanity.’
      • ‘The cheese then enters a sea of brine salt solution for cooling.’
      • ‘Sioux County, Iowa, is a fertile, wall-to-wall sea of corn and soybeans.’


Old English sǣ, of Germanic origin; related to Dutch zee and German See.




Definition of SEA in English: