ocean 
/ˈoʊʃən/ noun
plural oceans /ˈoʊʃən/ noun 1 [noncount] : the salt water that covers much of the Earth's surface
▪ We've sailed across hundreds of miles of ocean. — often used with the ▪ They lived near the ocean. [=the sea] ▪ He had never seen the ocean before. ▪ There's a storm moving in from the ocean. ▪ The ship quickly sank to the bottom of the ocean. ▪ the deepest parts of the ocean — often used before another noun ▪ the ocean floor/bottom/surface ▪ the salty ocean air ▪ ocean fish ▪ an ocean voyage/liner — see color picture 2 or Ocean [count] : one of the five large areas of salt water that cover much of the Earth's surface
▪ the Atlantic Ocean ▪ the Pacific and Indian oceans ▪ the Arctic/Antarctic Ocean 3 [count] informal : a very large number or amount of something
▪ an ocean of sadness — often plural ▪ oceans of time [=lots of time]
▪ We've sailed across hundreds of miles of ocean. — often used with the ▪ They lived near the ocean. [=the sea] ▪ He had never seen the ocean before. ▪ There's a storm moving in from the ocean. ▪ The ship quickly sank to the bottom of the ocean. ▪ the deepest parts of the ocean — often used before another noun ▪ the ocean floor/bottom/surface ▪ the salty ocean air ▪ ocean fish ▪ an ocean voyage/liner — see color picture
▪ the Atlantic Ocean ▪ the Pacific and Indian oceans ▪ the Arctic/Antarctic Ocean
▪ an ocean of sadness — often plural ▪ oceans of time [=lots of time]
a drop in the ocean — see 1drop
— oce·an·ic /ˌoʊʃiˈænɪk/ adjective, technical
▪ oceanic birds/islands/waters
/ˌoʊʃiˈænɪk/ adjective, technical ▪ oceanic birds/islands/waters
