a. [ Pref. bi- + weekly. ] Occurring or appearing once every two weeks; fortnightly. --
adj. occurring during the middle of the week;
a. Coming, or made, or done, once every half week;
a. [ Pref. tri- + weekly. ] Occurring or appearing three times a week; thriceweekly;
☞ This is a convenient word, but is not legitimately formed. It should mean occurring once in three weeks, as triennial means once in three years. Cf. Biweekly. [ 1913 Webster ]
a.
n.;
adv. Once a week; by hebdomadal periods;