δημακίδιον
From LSJ
Ῥῦσέ με δεινῶν νοσημάτων, ἱερώτατε, ἱερωσύνην συναρμόσας ἐν χαρᾷ και ἐπιστήμης τὸ πολύτιμον κεφάλαιον → Deliver me from grievous afflictions, most holy one, joining sanctity together in joy with the precious fountainhead of knowledge
English (LSJ)
[κῐ], τό, Com. Dim. of Δήμαξ, 'magnificative' of δῆμος, Ar.Eq.823; cf. δημίδιον.