LSJ Gloss:ἀκροατήριονa place of audienceDodson:ἀκροατήριονauditorium, recitation hall, court roomauditorium, recitation hall, court room (for hearing cases).
TBESG:ἀκροατήριονhallG:N-N ἀκροατήριον, -ου, τό (< ἀκροάομαι, to listen) a place of audience: Act.25:23 (Plut.).† (AS)
ἀκροατής akroatēs ak-ro-at-ace' From ἀκροάομαι akroaomai (to listen; apparently an intensive of G191); a hearer (merely)KJV Usage: hearer.
ἐπακροάομαι epakroaomai ep-ak-ro-ah'-om-ahee From G1909 and the base of G202; to listen (intently) toKJV Usage: hear.