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(Greek mythology) Personification of fertile waters, she was a Titan daughter of Uranus and Gaia, and with her brother Oceanus gave birth to all rivers and the Oceanids.
(geology) A large ocean which formerly lay between Eurasia and Africa. quotations
Much of the Tethys was shallow and warm during the Mesozoic, and full of life, a marine paradise of sorts: ammonites and sharks thrived, and are now preserved as fossils that date the rocks.
2004, Richard Fortey, The Earth, Folio Society, published 2011, page 106
The iteration of this oceanic basin during the Mesozoic, the most recent iteration. examples
(astronomy) A moon of Saturn. examples