OCEAN

noun Usage: often attributive Etymology: Middle English occean, from Anglo-French, from Latin ~us, from Greek Õkeanos, a river thought of as encircling the earth, ~ Date: 14th century 1. the whole body of salt water that covers nearly three fourths of the surface of the earth, any of the large bodies of water (as the Atlantic Ocean) into which the great ~ is divided, a very large or unlimited space or quantity