|Origin:||oceanus, from Greek Okeanos name of a river believed to flow around the world|
1 especially American EnglishDNSG
the great mass of salt water that covers most of the Earth's surface [= the sea]:
She stood on the beach, gazing at the ocean.
I like to swim in the ocean when it's warm enough.
one of the very large areas of sea on the Earth's surface:
the Pacific Ocean
a lot of something, especially a liquid:
oceans of champagne