- 1the ocean [singular] the mass of salt water that covers most of the earth's surface the depths of the ocean People were swimming in the ocean despite the hurricane warning. The plane hit the ocean several miles offshore. Our beach house is just a couple of miles from the ocean. an ocean liner Ocean levels are rising.
- 2Ocean [countable] one of the five large areas that the ocean is divided into the Antarctic/Arctic/Atlantic/Indian/Pacific Ocean Idioms
a large amount of something
Check pronunciation: ocean