- 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.
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- Greek myth a Titan, divinity of the stream believed to flow around the earth
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012