Ăc'ro-a-măt'ic or Ăc'ro-a-măt'ic-al, a.

a. [Gr. ἀκροαματικός, from ἀκροᾶσθαι, to hear.] Designed only to be heard; oral;—applied to the esoteric teachings of Aristotle, which were confined to his immediate hearers or disciples, in distinction from his exoteric doctrines, which were taught by means of books.