every two years; this festival takes places biennially
[ Syn: biennially , biennially , biennially , biennially , biennially , biennially , biennially , biennially ]
twice a year
[ Syn: semiannually , semiannually , semiannually , semiannually , semiannually , semiannually , semiannually , semiannually ]
biyearly (adv.)
occurring every second year; they met at biennial conventions
[ Syn: biennial ]
occurring or payable twice each year
[ Syn: semiannual , biannual , half-yearly ]