biannual

Letters that make biannual

a, b, l, n, i, u are letters that make 'biannual'

AN, nu, annual, AL, IA, Al, Bi are words within 'biannual'

1 possible definitions for 'biannual'

Under this definition, biannual is an adjective and has the following properties:

semiannual, biyearly, half-yearly have the same meaning as 'biannual'

periodic, periodical are similar to 'biannual'.