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1. Occurring every two weeks
   - fortnightly [Brit]
    
2. Occurring twice a week
   - semiweekly

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

1. Twice a week
   "he called home biweekly";
   - semiweekly
    
2. Every two weeks
   "he visited his cousins biweekly";
   - fortnightly [Brit]

Derived forms: biweeklies

See also: periodic, periodical

Type of: serial, serial publication, series

Encyclopedia: Biweekly