- any part of or the entirety of salt water that covers more than 70 percent of the earth's surface: Most of her adult life had been spent on the ocean, first on a fishing boat, then in the navy, now as a marine biologist.
- any of the geographical divisions of the earth’s salt water, in particular, the five identified as the Pacific, Atlantic, Indian, Southern, and Arctic Oceans.
- a vast expanse or quantity: oceans of opportunity;the ocean of people at Woodstock.
- a very large stretch of sea, esp one of the five oceans of the world, the Atlantic, Pacific, Indian, Arctic, and Antarctic
- the body of salt water covering approximately 70 per cent of the earth's surface
- a huge quantity or expanse
- the sea
