1Greek Mythology A goddess of the sea, daughter of Uranus (Heaven) and Gaia (Earth).
〔希腊神话〕蒂锡斯（海神之一，天神乌拉诺斯和大地女神盖亚的女儿）
2Astronomy A satellite of Saturn, the ninth closest to the planet and probably composed mainly of ice, discovered by Cassini in 1684 (diameter 1,050 km).
〔天文〕土卫三
3Geology An ocean formerly separating the supercontinents of Gondwana and Laurasia, the forerunner of the present-day Mediterranean.
〔地质〕蒂锡斯海；古地中海
Definition of Tethys in US English:
Tethys
proper nounˈteTHəsˈtɛθəs
1Greek Mythology A goddess of the sea, daughter of Uranus (Heaven) and Gaia (Earth).
〔希腊神话〕蒂锡斯（海神之一，天神乌拉诺斯和大地女神盖亚的女儿）
2Astronomy A satellite of Saturn, the ninth closest to the planet, discovered by Cassini in 1684. It is probably composed mainly of ice and has a diameter of 659 miles (1,060 km).
〔天文〕土卫三
3Geology An ocean formerly separating the supercontinents of Gondwana and Laurasia, the forerunner of the present-day Mediterranean.