Biweekly

[baɪ'wiːklɪ] or [baɪ'wikli]

(noun.) a periodical that is published twice a week or every two weeks (either 104 or 26 issues per year).

Editor: Zeke--From WordNet

(a.) Occurring or appearing once every two weeks; fortnightly.

(n.) A publication issued every two weeks.

Checked by Cordelia