Meaning & use
ocean
One of the huge bodies of salt water covering most of Earth's surface.
See it in a sentence
The ship sailed across the Atlantic Ocean for nearly two weeks.
Scientists estimate that most of the ocean floor remains unexplored.
A note on using this word
There are five recognized oceans; 'sea' is often used informally in the same way, though seas are technically smaller, partly enclosed bodies of water.
Words with a similar meaning
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