LSJ
ὁ, (< θεός, ἄγω) priest who carried images of the gods in Egypt, PPetr. 3P. 239 (iii BC), PTeb. 61 (b).59 (ii BC), PRyl. 196.14 (ii AD), etc. ; — fem. θεάγισσα, ἡ, PSI 9.1039.45 (iii AD), al.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)