noun

ocean

ocean, sea

We sailed across the ocean.

We sailed across the ocean.

There's an ocean of difference between them.

There's an ocean of difference between them.

the ((name)) Ocean used with specific ocean names The Atlantic Ocean is cold.

an ocean of ((sth.)) a very large amount of something He has an ocean of knowledge.

Synonyms: sea, the deep, the brine

From Greek 'Ōkeanós', the name of the river or sea believed to encircle the world.

Picture a big 'O' shape, like the world, filled with water.

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