bi-weekly

In all cases of this sort, it will be sufficient, that a letter is put into the post-office early enough after the day of the dishonor of the Note to go by the next post, whether it be a bi-weekly, or tri-weekly, or a mere weekly conveyance, if it be the ordinary mode of communication.

1845, Joseph Story, Commentaries on the Law of Promissory Notes and Guaranties of Notes and Checks on Banks and Bankers, page 388

Although the prison discontinued our family reunion weekend visits, our bi-weekly visits continued for a couple of hours every other Sunday.

2014, W. Malave, To Love One Another, page 189

Meet weekly or bi-weekly to discuss duties and responsibilities and to encourage other girls in the squads to greater participation and better results.

1944 January 28, Marion E. Purbeck, “Pupil Leadership in the High School”, in The Journal of Health and Physical Education, volume 15, number 1, page 11

With a Site Coordinator at each agency responsible for day-to-day operations and service assistance, the support groups meet bi-weekly in addition to individual counseling sessions and other types of group activities.

1996, M. Joanna Mellor, Special Aging Populations and Systems Linkages, page 15