Meaning & History
Meaning unknown. It could be based on an elaboration of Tess, or an alteration of Taisia (the Russian and Ukrainian form of Thaïs). In the fantasy series The Witcher by Andrzej Sapkowski (and the TV series adaptation), Tissaia de Vries is the Rectoress of Aretuza, a training academy for female mages, and the mentor of Yennefer.