biannual

Pluralbiannuals

1. 1
   adjective

   Happening two times every year.

   Our school has a biannual book sale, once in the fall and once in the spring.

   The dentist sends biannual reminders about checkups.

   Similarsemiannual, half-yearly

2. 2
   adjective

   Happening once every two years.

   "The reunion's biannual now, so we won't see everyone until the year after next," Grandma said.

   "It's a biannual thing, so the fair skips every other year," he told me.

   Similarbiennial

   Note
3. 3
   nouncountable

   Something that happens two times every year, like a magazine that comes out twice a year.

   The magazine started as a biannual and later came out every month.

   The garden show is a biannual, held in May and again in October.

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