Oceanus

[ oh-see-uh-nuh s ]
/ oʊˈsi ə nəs /

noun Classical Mythology.

a Titan who was the son of Uranus and Gaea, the consort of Tethys, and the father of the river gods and Oceanids.
a great stream of water encircling the earth and believed to be the source of all rivers, lakes, etc.

British Dictionary definitions for oceanus

Oceanus
/ (əʊˈsɪənəs) /

noun

Greek myth a Titan, divinity of the stream believed to flow around the earth