adv. [f. prec. + -LY2.] Every two years; once in two years.
1775. Burke, Sp. Conc. Amer., Wks. III. 98. Through whose hands the acts pass biennially in Ireland, or annually in the colonies.
1820. Scott, Abbot, iv. The Professor’s cast-off suit, which he disparts with biennially.
