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ocean

o·cean [ ṓsh'n ] (plural o·ceans)


noun 
Definition:
 
1. large sea: a large expanse of salt water, especially any of the Earth's five main such areas, the Atlantic, Pacific, Indian, Arctic, and Antarctic oceans. The oceans occupy huge regions of the Earth's surface, and their boundaries are usually established by continental land masses and ridges in the ocean floor.

2. Earth's seas together: the whole body of salt water on the Earth

3. large amount: a vast amount or expanse of something

[13th century. Via French and Latin< Greek ōkeanos, the river surrounding the disk of the Earth]
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