πρυτανάρχης
From LSJ
ἔστιν δέ που ἡ μὲν ἐπὶ σώμασι γυμναστική, ἡ δ' ἐπὶ ψυχῇ μουσική → I think I am right in saying that we have physical exercise for the body and the arts for the soul
English (LSJ)
ου, ὁ, A president of a board of πρυτάνεις, Ath.Mitt.6.42 (Cyzicus).
Greek (Liddell-Scott)
πρυτανάρχης: ὁ, ὁ τῶν πρυτάνεων ἀρχηγός, Ἐπιγρ. Κυζίκου, Mitth. d, d. arch. Inst. VI, σ. 42.