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DictionaryoceanVast saltwater body
noun

ocean

OH-shun/ˈəʊʃn/

A vast body of salt water covering much of Earth.

The ocean stretches to the distant horizon in rolling blue swells.

A sweeping open ocean with distant horizon and rolling blue swells, immense salt water.
Etymology
oceanGreeksea or river surrounding the earth

Greek ōkeanos named the great river or sea imagined to encircle the earth, connecting the word with vast surrounding waters. Its deeper origin is unknown.

In context

MooMooMath and Science0:06
An estuary is a body of water that has fresh water entering and is also open to the ocean. It is semi-enclosed, coastal body of water, and it's connected to the open sea
What is an estuary?

More examples

  • They crossed the ocean by ship.
  • Plastic waste reaches every ocean.
  • The island lies far out in the ocean.

Forms

ocean · oceans

oceanic adjective — Relating to the ocean.

Similar words

sea
Often a smaller named part of the ocean.
waters
A general term for a body or area of water.