noun Classical Mythology.

a Nereid, the wife of Peleus and the mother of Achilles. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of thetis

British Dictionary definitions for thetis



one of the Nereids and mother of Achilles by Peleus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for thetis


name of a sea nymph or Nereid, mother of Achiles. Sometimes in poetry, "the sea personified."

Online Etymology Dictionary, © 2010 Douglas Harper