symposiˈastic,a. [ad.med.Gr. συµποσιαστικός, f. *συµποσιαστής: see prec. and -ic.] = symposiac a. 1669Gale Crt. Gentiles i. iii. iv. 54 Plato, in his Symposiastic Dialogue..mentions [etc.].1866Blackmore Cradock Nowell xl, He thought about Socrates, and his symposiastic drolleries.