Pl. acroases. [Gr. ἀκρᾱσις a hearing, something listened to, f. ἀκροᾶσθαι to hear.] Anc. Hist. An oral discourse; a discourse listened to.

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1655–60.  T. Stanley, Hist. Philos., 358/1 (1701). Six hundred Persons … came to his nocturnal Acroasis, perhaps meaning the Lectures through a Skreen during their Probation.

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1842.  Mrs. Browning, Gk. Chr. Poets, 64. [He] gave his admiring poems the appropriate and suggestive name of acroases—auscultations, things intended to be heard.

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