Ocean

(ō’shun), n. [Fr. océan, Sp. & It. oceano, Lat. oceanus, Gr. ὠκεανός, i. e., perhaps, the rapid-flowing, from ὠκύς, quick, rapid, and νάω, to flow; or from Skr. āgha, a heap, stream, multitude, flood of water, Ir. aigein, Gael. aigeann, W. aig, eigiawn, eigion.]

1. The water, considered as one vast body, which covers more than three fifths of the surface of the globe; — called also the sea, or great sea.
2. One of the large bodies of water into which the great ocean is regarded as divided, as the Atlantic, Pacific, Indian, Arctic, and Antarctic oceans.
3. Hence, an immense expanse; as, the boundless ocean of eternity; oceans of duration and space.