- 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 Tēthys
an ancient sea and geosyncline, especially 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.