Emily Dickinson Lexicon

SYM-PO'SI-AC, a. [sympo'ziac; Gr. συμποσια, a drinking together; συν, together, and πινω, to drink.]

Pertaining to compotations and merry-making; happening where company is drinking together; as, symposiac meetings. – Brown. Symposiac disputations. [Not much used.] – Arbuthnot.