triweekly

tri·week·ly

T0372700 (trī-wēk′lē)adj.1. Happening, done, or appearing three times a week.2. Happening, done, or appearing every three weeks.adv.1. Three times a week.2. Every three weeks.n. pl. tri·week·lies A periodical published triweekly.

triweekly

(traɪˈwiːklɪ) adj, adv1. every three weeks2. three times a weekn, pl -lies (Journalism & Publishing) a triweekly publication

tri•week•ly

(traɪˈwik li)

adv., adj., n., pl. -lies. adv. 1. every three weeks. 2. three times a week. adj. 3. occurring or appearing every three weeks. 4. occurring or appearing three times a week. n. 5. a triweekly publication. [1825–35]
Translations
trihebdomadaire