<p><strong>noun</strong></p><ul><li>any part of or the entirety of salt water that covers more than 70 percent of the earth's surface:</li><li>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.</li><li>a vast expanse or quantity: oceans of opportunity; the ocean of people at Woodstock.</li></ul>