ācrŏāsis — Lewis & Short
ācrŏāsis, is, f., = a)kro/asis (
I a hearing, a listening to), the discourse delivered before an assembly, public lecture (cf. the use of contio among Eng. and collegium among Germ. scholars, for discourse, etc.):
ut eas vel in acroasi audeam legere,in a public lecture, Cic. Att. 15, 17, 2:
Callias acroasin fecit,Vitr. 10, 22:
plurimas acroases fecit,Suet. Gram. 2 (al. a)kroa/seis).