Definitions for oceanusoʊˈsi ə nəs
Random House Webster's College Dictionary
O•ce•a•nusoʊˈsi ə nəs(n.)
(in Greek myth) a Titan who rules over a great stream of water that encircles the earth.
(Greek mythology) god of the stream that flowed around the earth in ancient mythology
Personification of vast waters or the world ocean. He was the first-born of the Titans, son of Uranus and Gaia, the god u03A9u03BAu03B5u03B1u03BDu03CCu03C2 u03A0u03BFu03C4u03B1u03BCu03CCu03C2 (River Ocean) that encircled the earth. With his sister Tethys fathered all rivers and the Oceanids.
Origin: From Ὠκεανός (Okeanos).
The Nuttall Encyclopedia
or Okeanos, in the Greek mythology the great world-stream which surrounds the whole earth, and is the parent source of all seas and streams, presided over by a Titan, the husband of Tethys, and the father of all river-gods and water-nymphs. He is the all-father of the world, as his wife is the all-mother, and the pair occupy a palace apart on the extreme verge of the world.