Thebaic :: Thebaic (a.) 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..
Thebaid :: Thebaid (n.) A Latin epic poem by Statius about Thebes in Boeotia.
Thebaine :: Thebaine (n.) A poisonous alkaloid, C19H21NO3, found in opium in small quantities, having a sharp, astringent taste, and a tetanic action resembling that of strychnine..