Webster’s Revised Unabridged Dictionary · 1913
Thebaic
The·ba′ic (thē·bā′ĭk), a. [L. thebaicus, Gr. Θηβαϊκός.] Of or pertaining to Thebes in Egypt; specifically, designating a version of the Bible preserved by the Copts, and esteemed of great value by biblical scholars. This version is also called the Sahidic version.