- Gr. Myth. a daughter of Uranus and wife of Oceanus, by whom she is the mother of the Oceanides
- a satellite of Saturn having long trenchlike valleys and sharing its orbit with other satellites
Origin of TethysClassical Latin ; from Classical Greek T?thys
- Greek Mythology A Titaness and sea goddess who was both sister and wife of Oceanus.
- A satellite of Saturn.
Origin of TethysLatin T&emacron;thys, from Greek T&emacron;thus.