- occurring, done, or published every half year or twice a year; semiyearly.
- lasting for half a year: a semiannual plant.
Origin of semiannual
Examples from the Web for semiannually
Historical Examples of semiannually
I am held accountable to the Secretary of the Treasury semiannually for the manner in which the appropriation has been expended.Red Men and White
He had established a branch of his gigantic business there and himself rolled semiannually from coast to coast in his private car.Play the Game!
Ruth Comfort Mitchell
Weekly or monthly or yearly, sometimes semiannually, and so forth.Warren Commission (8 of 26): Hearings Vol. VIII (of 15)
The President's Commission on the Assassination of President Kennedy
The cockroach is born on the fust ov May and the fust ov November semiannually, and is reddy for use in fifteen days from date.The Complete Works of Josh Billings
Henry W. Shaw
- occurring every half-year
- lasting for half a year