- 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
any of various ancient seas and geosynclines, esp. any of those of the Mesozoic and early Cenozoic eras that separated Laurasia from Gondwana
- Greek Mythology A Titaness and sea goddess who was both sister and wife of Oceanus.
- A satellite of Saturn.
Origin of TethysLatin Tēthys from Greek Tēthus