adj of or pertaining to the main or great sea; as, the ocean waves; an ocean stream.
2. ocean ·noun an immense expanse; any vast space or quantity without apparent limits; as, the boundless ocean of eternity; an ocean of affairs.
3. ocean ·noun the whole body of salt water which covers more than three fifths of the surface of the globe;
called also the sea, or great sea.
4. ocean ·noun 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.