ⲑⲱⲛ

• ⲧⲱⲛ (tōn) — Sahidic, Fayyumic
• ⲧⲟ (to) — Lycopolitan, Akhmimic
• ⲧⲱ (tō) — Akhmimic
• ⲧⲟⲛ (ton) — Fayyumic, Lycopolitan

From Demotic tn (“where”), from Egyptian (ṯnj, “where”).

ⲑⲱⲛ • (thōn)

1. (Bohairic) where

• Černý, Jaroslav (1976) Coptic Etymological Dictionary, Cambridge: Cambridge University Press, →ISBN, page 189
• Crum, Walter E. (1939) A Coptic Dictionary‎^[1], Oxford: Clarendon Press, →ISBN, page 417